
- Alcohol use disorder is the continued use of alcohol despite clinically
significant distress or impairment which usually includes:
- a strong desire to take alcohol
- difficulties in controlling its use
- persisting in its use despite harmful consequences
- a higher priority given to alcohol use than to other activities and
obligations
- increased tolerance
- a physical withdrawal
state
Prediction
Episodic or continuous for years
Problems
Occupational-Economic Problems:
- Causes significant impairment in academic or occupational functioning
- Only a minority are so chronically disabled that they require a disability
pension
- Economic problems caused by squandering money or alcohol-related unemployment
- Alcohol Use Disorder accounts for 9.6% of the disability caused by
mental illness worldwide
Antagonistic (Antagonism):
- Intoxicated behavior can be very uncooperative and disagreeable
Disinhibited (Disinhibition):
- Intoxicated behavior, impaired driving
- Impulsivity, dangerous risk taking, irresponsibility
- Law-breaking, violence
- Marital (or child) discord/abuse/neglect
Cognitive Impairment (Impaired Intellect):
- Marked denial; lack of insight
- Cognitive impairment when intoxicated
- Chronic alcoholism can cause alcoholic hallucinosis, psychosis, amnestic
disorder, delirium, or dementia
Emotional Distress (Negative Emotion):
- Depressed mood, generalized anxiety, anger, suicidal behavior
Sociable (High Extraversion) OR Detached (Detachment):
- Intoxicated behavior can cause, socially and sexually, either excessive
disinhibition (being talkative and assertive) or inibition (being quiet and
reserved)
Medical:
- Alcoholism is the 3rd leading cause of death in the developed world.
- Sort-term Consequences: automobile accidents, accidental
injuries, accidental or deliberate overdoses, injuries and risky behavior,
memory and concentration problems, coma, breathing problems, slurred speech,
confusion, impaired judgment and motor skills, drowsiness, nausea and vomiting,
emotional volatility, loss of coordination, visual distortions, impaired memory,
changes in mood and behavior, and depression. Impaired judgment can result in
inappropriate sexual behavior, sexually transmitted infections, and reduced
inhibitions.
- Long-term Consequences: impaired coordination;
cardiovascular problems including heart muscle injury, irregular heartbeat,
stroke, and high blood pressure; gastritis, ulcers; liver problems including
steatosis (fatty liver), alcoholic hepatitis, fibrosis, and cirrhosis;
pancreatitis; alcohol withdrawal seizures; peripheral neuropathy;
alcohol-induced persisting amnestic disorder (Wernicke-Korsakoff syndrome);
erectile dysfunction; increased risk of various cancers (including of the mouth,
esophagus, larynx, pharynx, liver, colon, and rectum); weakened immune system;
coma, and death due to alcohol overdose. For breast cancer, even moderate
drinking may increase the risk.
- Pregnancy-related: sudden infant death syndrome (SIDS), fetal alcohol spectrum
disorders (FASD).
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Diagnose Alcohol Use Disorder
Limitations of Self-Diagnosis
Self-diagnosis of this disorder is often inaccurate. Accurate diagnosis of this disorder
requires assessment by a qualified practitioner trained in psychiatric diagnosis and
evidence-based treatment.
However, if no such professional is available, our free computerized diagnosis is usually
accurate when completed by an informant who knows the patient well. Computerized
diagnosis is less accurate when done by patients (because they often lack insight).
Example Of Our Computer Generated Diagnostic Assessment
Alcohol Use Disorder (Alcoholism) 303.90
This diagnosis is based on the following findings:
- Abused alcohol in the past 5 years (still present)
- Greater use of alcohol than intended (still present)
- There is a persistent desire or unsuccessful efforts to cut down or control
alcohol use (still present)
- A great deal of time is spent in obtaining alcohol, using alcohol, or
recovering from its effects (still present)
- Craving, or a strong desire or urge to use alcohol (still present)
- Recurrent alcohol use resulting in a failure to fulfill major role obligations
at work, school or home (still present)
- Continued alcohol use despite having persistent social problems that alcohol
made worse (still present)
- Important social, occupational, or recreational activities are given up or
reduced because of alcohol use (still present)
- Recurrent alcohol use in situations in which it is physically hazardous (still
present)
- Continued using alcohol despite knowing it caused significant problems (still
present)
- Developed tolerance to alcohol (still present)
- Developed withdrawal symptoms to alcohol (still present)
Treatment Goals:
- Goal: stop alcohol use because using more than intended.
If this problem worsens: Repeated alcohol intoxication could continue to
cause harmful psychological consequences (e.g., inappropriate sexual or
aggressive behavior, mood lability, impaired judgment, impaired social or
occupational functioning).
- Goal: stop alcohol use because it is getting out of control.
- Goal: stop alcohol use in order to prevent wasting so much time
using alcohol, or recovering from its use.
- Goal: stop alcohol use in order to decrease craving for alcohol.
- Goal: stop alcohol use so that she can better fulfill major role
obligations at work, school or home.
- Goal: stop alcohol use in order to improve the alcohol-related
social problems.
- Goal: stop alcohol use in order to increase time spent on important
social, occupational, or recreational activities.
- Goal: stop alcohol use in hazardous situations in order to prevent
injury.
- Goal: stop alcohol use in order to prevent further worsening of
current alcohol-related physical or emotional problems.
- Goal: stop alcohol use because tolerance to alcohol is
developing.
- Goal: stop alcohol use because alcohol withdrawal symptoms are
developing.
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Diagnostic Features
Alcohol Use Disorder is a condition characterized by the harmful consequences of repeated
alcohol use, a pattern of compulsive alcohol use, and (sometimes) physiological dependence
on alcohol (i.e., tolerance and/or symptoms of withdrawal).
This disorder is only diagnosed when these behaviors become persistent and very disabling or
distressing. There is often craving for alcohol that makes it difficult to think of anything
else until drinking resumes.
Alcohol Intoxication causes significant psychological and social impairment (e.g.,
inappropriate sexual or aggressive behavior, mood lability, impaired judgment, impaired
social or occupational functioning).
This intoxication has one or more of the following physical signs: slurred speech,
incoordination, unsteady gait, nystagmus, impairment in attention or memory, stupor or coma.
Alcohol Intoxication is similar to Benzodiazepine or Barbiturate Intoxication.
Alcohol Makes Anxiety Better, Then Worse:
Many alcoholics state that they started drinking "to calm their nerves" and this led to
their addiction as their anxiety got worse. This is actually a misinterpretation of what
actually happened.
Alcohol initially reduces anxiety; only to increase it a few hours later. In the first hour
or two after drinking, alcohol has a sedative, antianxiety effect. Thereafter, alcohol
actually increases anxiety, and this prompts the individual to ingest more alcohol.
Thus the more the individual drinks alcohol to "decrease anxiety"; the more alcohol causes
increased anxiety. This is why alcohol is a bad treatment for insomnia since it only sedates
the person for a few hours; then alcohol increases anxiety and arousal, which wakes the
person up. The longer the individual can stay "dry" off alcohol; the less problem they will
have with anxiety and insomnia.
Alcohol Withdrawal only occurs after the cessation of (or reduction in) heavy and prolonged
alcohol use. This withdrawal syndrome includes two or more of the following: autonomic
hyperactivity (e.g., sweating or pulse rate greater than 100); increased hand tremor;
insomnia; psychomotor agitation; anxiety; nausea or vomiting; and, rarely, grand mal
seizures or transient visual, tactile, or auditory hallucinations or illusions.
This withdrawal syndrome can be relieved by administering alcohol or any other brain
depressant. These withdrawal symptoms usually begin within 4-12 hours of abstinence, and
peak on the second day of abstinence. The Alcohol Withdrawal improves markedly by the 4th or
5th
day of abstinence; however, symptoms of anxiety, insomnia, and autonomic dysfunction may
persist for up to 3-6 months at lower levels of intensity.
Complications
School and job performance may suffer either from hangovers or from actual intoxication on
the job or at school; child care or household responsibilities may be neglected; and
alcohol-related absences may occur from school or job.
The individual may use alcohol in physically hazardous circumstances (e.g., drunk driving or
operating machinery while intoxicated). Legal difficulties may arise because of alcohol use
(e.g., arrests for intoxicated behavior or for drunk driving).
Individuals with this disorder may continue to abuse alcohol despite the knowledge that
continued drinking poses significant social or interpersonal problems for them (e.g.,
violent arguments with spouse while intoxicated, child abuse). Alcohol intoxication causes
significant intellectual impairment (and stupid behavior).
Once a pattern of compulsive use develops, individuals with this disorder may devote
substantial periods of time to obtaining and consuming alcoholic beverages. These
individuals continue to use alcohol despite evidence of adverse psychological or physical
consequences
(e.g., depression, blackouts, liver disease, or other complications).
Individuals with this disorder are at increased risk for accidents, violence, and suicide.
It is estimated that 1 in 5 intensive care unit admissions in some urban hospitals is
related to alcohol and that 40% of people in U.S.A. experience an alcohol-related accident
at
some time in their lives, with alcohol accounting for up to 55% of fatal driving events.
More than one-half of all murderers and their victims are believed to have been intoxicated
with alcohol at the time of the murder.
Severe alcohol intoxication also contributes to disinhibition and feelings of sadness and
irritability, which contribute to suicide attempts and completed suicides.
Comorbidity
Individuals with Alcohol Use Disorder are at increased risk for Major Depressive Disorder,
other Substance Use Disorders (e.g., drug addiction), Conduct Disorder in adolescents,
Antisocial and Borderline Personality Disorders, Schizophrenia, and
Bipolar Disorder.
Associated Laboratory Findings
Evidence of alcohol use can be obtained by smelling alcohol on the individual's breath, or
having the individual undertake breath, blood, or urine toxicology tests.
The most direct test available to measure alcohol consumption is blood alcohol
concentration, which can also be used to judge tolerance to alcohol.
An individual with a concentration of 100 mg of ethanol per deciliter of blood who does
not show signs of intoxication can be presumed to have acquired tolerance to alcohol. At
200 mg/dL, most non-alcoholic individuals would demonstrate severe intoxication.
An elevation (> 30 units) of gamma-glutamyltransferase (GGT) is a sensitive laboratory
test for heavy drinking. At least 70% of individuals with a high GGT level are
persistent heavy drinkers (i.e., consuming 8 or more drinks daily on a regular basis).
Another sensitive test for heavy drinking is an elevation (> 20 units) in carbohydrate
deficient transferrin (CDT).
Both GGT and CDT levels return toward normal within days to weeks of stopping drinking,
thus are useful tests to monitor abstinence. The combination of GGT and CDT may have
even higher levels of sensitivity and specificity in diagnosing heavy drinking than
either test
used alone.
Another useful laboratory test for heavy drinking is an elevated mean corpuscular volume
(MCV). However, the MCV is a poor method of monitoring abstinence because it takes weeks
to return to normal after the individual stops drinking.
Liver function tests (e.g., alanine aminotransferase [ALT] and alkaline phosphatase) can
reveal liver injury that is caused by heavy drinking. High fat content in the blood also
contributes to the development of fatty liver.
Prevalence
Alcohol use is highly prevalent in most Western countries. However, in most Asian cultures,
the overall prevalence of alcohol-related disorders is low. In Muslim countries, the Islamic
religion strictly prohibits alcohol (hence the prevalence of alcohol-related disorders
is very low).
In America, the male:female ratio is 2.5:1 and the lifetime risk of Alcohol Use Disorder is
approximately 15% in the general population. The 12-month prevalence of Alcohol Use Disorder
in America is 4.6% among 12- to 17-year-olds and 8.5% among adults age 18 years and
older.
The 12-month prevalence rate is highest among individuals 18- to 29-years-old (16.%) and
lowest among individuals aged 65 years and older (1.5%). In America for adults, the
prevalence rates are greater among Native Americans and Alaska Natives (12.1%) than among
whites
(8.9%), Hispanics (7.9%), African Americans (6.9%), and Asian American and Pacific Islanders
(4.5%).
Course
Alcohol Use Disorder has a variable course that is frequently characterized by periods of
remission and relapse. The first episode of alcohol intoxication is likely to occur in the
mid-teens, with the age at onset of Alcohol Use Disorder peaking in the 18- to
29-years-olds. The large majority of those who develop Alcohol Use Disorder do so by their
late 30s.
Outcome
Follow-up studies of the typical person with an Alcohol Use Disorder show a higher than 65% 1-year abstinence rate following treatment.
Even among less functional and homeless individuals with Alcohol Use Disorder who complete a
treatment program, as many as 60% are abstinent at 3 months, and 45% at 1 year. Some
individuals (perhaps 20% or more) with Alcohol Use Disorder achieve long-term sobriety even
without treatment.
Comparative Lethality
Chronic users of cigarettes lose 13% of their expected lifespan, chronic users of alcohol lose
29%, chronic users of cocaine lose 44%,
chronic users of methadone lose 49%, chronic users of heroin
lose 52%, and chronic users of methamphetamine lose 53% of their expected lifespan.
Medical Complications
Only 5% of individuals with Alcohol Use Disorder ever experience severe complications of
withdrawal (e.g., delirium, grand mal seizures).
However, repeated intake of high doses of alcohol can affect nearly every organ system,
especially the gastrointestinal tract, cardiovascular system, and the central and peripheral
nervous system. Gastrointestinal effects include gastritis, stomach or duodenal ulcers,
and, in about 15% of those who use alcohol heavily, liver cirrhosis and pancreatitis.
There is also an increased rate of cancer of the esophagus, stomach, and other parts of the
gastrointestinal tract. One of the most common associated general medical conditions is
low-grade hypertension. There is an elevated risk of heart disease.
Peripheral neuropathy may be evidenced by muscular weakness, paresthesias, and decreased
peripheral sensation. Most persistent central nervous system effects include cognitive
deficits, severe memory impairment, and degenerative changes in the cerebellum (leading to
poor
balance and coordination).
One devastating central nervous system effect is the relatively rare alcohol-induced
persisting amnestic disorder (Wernicke-Korsakoff syndrome) in which there is a dramatic
impairment in short-term memory.
Men may develop erectile dysfunction and decreased testosterone levels.
Repeated heavy drinking in women is associated with menstrual irregularities and, during
pregnancy, with spontaneous abortion and fetal alcohol syndrome (leading to mentally
retarded, hyperactive children).
Alcohol Use Disorder can suppress immune mechanisms and predispose individuals to infections
(e.g., pneumonia) and increase the risk for cancer.
Patients frequently have very poor insight into their addiction (i.e., denial).
Familial Pattern
Alcohol Use Disorder often has a familial pattern, and it is estimated that 40%-60% of the
variance of risk is explained by genetic influences.
The risk for alcohol use disorder is 3 to 4 times higher in close relatives of people with
alcohol use disorder. Most studies have found a significantly higher risk for alcohol use
disorder in the monozygotic twin than in the dizygotic twin of a person with alcohol use
disorder.
Adoption studies have revealed a 3- to 4-fold increase in risk for alcohol use disorder in
the children of individuals with alcohol use disorder when these children were adopted away
at birth and raised by adoptive parents who did not have this disorder.
Effective Therapies
Alcoholism is usually a chronic, episodic disorder associated with periods of sobriety
punctuated by episodes of drinking. Therapy aims at preventing or shortening these relapses.
The "Helping
Patients Who Drink Too Much: A Clinician's Guide" is an excellent treatment resource
for clinicians. The "Rethinking
Drinking Booklet" is an excellent educational resource for the public.
Warning: Individuals with Alcohol Use Disorder
usually "forget" to take their anti-alcohol medications. Thus earlier research showed
these medications weren't that effective.
Later research has shown that compliance - hence effectiveness - is significantly
improved when another person daily supervises the patient's pill swallowing. The
month-long injection of naltrexone dramatically increases its effectiveness.
Only 3 medications have been proven successful in relapse prevention. Each of these
medications functions very differently.
Naltrexone blocks the pleasurable effect of alcohol, thus prevents the return to
heavy drinking if there is an alcoholic relapse. It can be given in daily oral form, or as a
month-long injection.
Acamprosate decreases the alcohol withdrawal craving, anxiety and insomnia that
persists for months after termination of drinking. Thus acamprosate decreases the number of
alcoholic relapses.
Disulfiram, when taken with alcohol, causes a person to turn red and vomit. Thus
disulfiram can be taken to prevent drinking, or to prove that a person isn't drinking.
Antianxiety medication should only be used during medically supervised initial
detoxification.
Addiction counselling and regular attendance at Alcoholics Anonymous (self-help group)
meetings significantly improves treatment outcome.
Although residential rehabilitation programs are the most expensive of all treatments for
Alcohol Use Disorder; there are no randomized controlled clinical trials that have yet
proven the superiority of residential treatment over non-residential, outpatient treatment.
Top 20 Most Harmful Drugs In Britain In 2008
Professor David Nutt published in the Lancet the following rating of Britain's most
dangerous drugs. They are listed in descending order from the most harmful.
1. Heroin
Class A drug. Originally used as a painkiller and derived from the opium poppy.
There were 897 deaths recorded from heroin and morphine use in 2008 in England and
Wales, according to the Office of National Statistics (ONS). There were around
13,000 seizures,
amounting
to 1.6m tonnes of heroin.
2. Cocaine
Class A. Stimulant produced from the South American coca leaf. Accounted for 235
deaths -- a sharp rise on the previous year's fatalities. Nearly 25,000 seizures
were made, amounting to 2.9 tonnes of the drug.
3. Barbiturates
Class B. Synthetic sedatives used for anaesthetic purposes. Blamed for 13 deaths.
4. Street methadone
Class A. A synthetic opioid, commonly used as a substitute for treating heroin
patients. Accounted for 378 deaths and there were more than 1,000 seizures of the
drug.
5. Alcohol
Subject to increasing concern from the medical profession about its damage to
health. According to the ONS, there were 8,724 alcohol deaths in the UK in 2007.
Other sources claim the true figure is far higher.
6. Ketamine
Class C. A hallucinogenic dance drug for clubbers. There were 23 ketamine-related
deaths in the UK between 1993 and 2006. Last year there were 1,266 seizures.
7. Benzodiazepines
Class C. A hypnotic relaxant used to treat anxiety and insomnia. Includes drugs such
as diazepam, temazepam and nitrazepam. Caused 230 deaths and 1.8m doses were
confiscated in more than 4,000 seizure operations.
8. Amphetamine
Class B. A psychostimulant that combats fatigue and suppresses hunger. Associated
with 99 deaths, although this tally includes some ecstasy deaths. Nearly 8,000
seizures, adding up to almost three tonnes of confiscated amphetamines.
9. Tobacco
A stimulant that is highly addictive due to its nicotine content. More than 100,000
people a year die from smoking and tobacco-related diseases, including cancer,
respiratory diseases and heart disease.
10. Buprenorphine
An opiate used for pain control, and sometimes as a substitute to wean addicts off
heroin. Said to have caused 43 deaths in the UK between 1980 and 2002.
11. Cannabis
Class B. A psychoactive drug recently appearing in stronger forms such as "skunk".
[Since this video was made; there is now conclusive proof that cannabis causes a 6.7
fold increase in the risk of developing schizophrenia.] Caused 19 deaths and there
were 186,000
seizures, netting 65 tonnes of the drug and 640,000 cannabis plants.
12. Solvents
Fumes inhaled to produce a sense of intoxication. Usually abused by teenagers.
Derived from commonly available products such as glue and aerosol sprays. Causes
around 50 deaths a year.
13. 4-MTA
Class A. Originally designed for laboratory research. Releases serotonin in the
body. Only four deaths reported in the UK between 1997 and 2004.
14. LSD
Class A. Hallucinogenic drug originally synthesised by a German chemist in 1938.
Very few deaths recorded.
15. Methylphenidate
Class B drug. Brand name of Ritalin. A psychostimulant sometimes used in the
treatment of attention deficit disorders.
16. Anabolic steroids
Class C. Used to develop muscles, notably in competitive sports. Also alleged to
induce aggression. Have been blamed for causing deaths among bodybuilders. More than
800 seizures.
17. GHB
Class C drug. A clear liquid dance drug said to induce euphoria, also described as a
date rape drug. Can trigger comas and suppress breathing. Caused 20 deaths and 47
seizures were recorded.
18. Ecstasy
Class A. Psychoactive dance drug. Caused 44 deaths, with around 5,000 seizures made.
19. Alykl nitrites
Known as "poppers". Inhaled for their role as a muscle relaxant and supposed sexual
stimulant. Reduce blood pressure, which can cause fainting and in some cases death.
20. Khat
A psychoactive plant, the leaves of which are chewed in east Africa and Yemen. Also
known as qat. Produces mild psychological dependence. Its derivatives, cathinone and
cathine, are Class C drugs in the UK.
Ineffective therapies
Vitamins and
dietary supplements are ineffective for preventing alcohol abuse.
Should Illicit Drugs Be Legalized?
The leading causes of death in USA in 2000 were tobacco (435 000 deaths; 18.1% of total US
deaths), poor diet and physical inactivity (365 000 deaths; 15.2%), and alcohol consumption
(85 000 deaths; 3.5%).
Some people argue that illicit drugs should be legalized to decrease the crime associated
with these drugs. Historically, tobacco and alcohol were once illegal drugs. Tobacco smoking
is now the leading cause of death in America, and alcoholism is the third leading cause
of death.
Thus legalizing illicit drugs does not make them any less medically and socially harmful. In
fact the opposite is true; legalizing illicit drugs increases their use and the harm they
cause. The Government of Finland is passing legislation that will gradually ban all
tobacco use by 2040.
Trustworthy Research (PubMed.gov)
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Experiment
showing effects of alcohol drinking (to test poor reliability of
breathalyzer)
Fetal Alcohol
Spectrum Disorder
Scotland Has Reduced Alcoholism By Increasing The
Cost Of Alcohol
Moderate drinking was supposedly good for you — until
researchers added in the influence of wealth
- Alcohol Use Disorder - Google
- Alcohol Abuse -
Epocrates Online
- Alcohol
Withdrawal - Epocrates Online
- Alcoholism and
alcohol abuse - PubMed Health
- Alcoholism - Wikipedia
- Alcohol Consumption Among Adults - Health at a Glance 2015:
OECD Indicators
- Alcoholism - Mayo
Clinic
- Alcohol Abuse and
Dependence - DSM-IV Diagnostic Criteria, American Psychiatric Association
- Alcohol Intoxication - DSM-IV
Diagnostic Criteria, American Psychiatric Association
- Alcohol Intoxication
Delirium - DSM-IV Diagnostic Criteria, American Psychiatric Association
- Alcohol-Induced
Anxiety Disorder - DSM-IV Diagnostic Criteria, American Psychiatric
Association
- Alcohol-Induced Mood
Disorder - DSM-IV Diagnostic Criteria, American Psychiatric Association
- Alcohol-Induced
Persisting Amnestic Disorder - DSM-IV Diagnostic Criteria, American
Psychiatric Association
- Alcohol-Induced
Persisting Dementia - DSM-IV Diagnostic Criteria, American Psychiatric
Association
- Alcohol-Induced
Psychotic Disorder - DSM-IV Diagnostic Criteria, American Psychiatric
Association
- Alcohol-Induced
Sexual Dysfunction - DSM-IV Diagnostic Criteria, American Psychiatric
Association
- Alcohol-Induced
Sleep Disorder - DSM-IV Diagnostic Criteria, American Psychiatric
Association
- Alcohol Withdrawal - DSM-IV
Diagnostic Criteria, American Psychiatric Association
- Alcohol Withdrawal
Delirium - DSM-IV Diagnostic Criteria, American Psychiatric Association
- Diagnosis and
Clinical Management of Alcohol-Related Physical Complications - PubMed
Health
- Excellent Animation
- 5 Myths
About Addiction - CBC
- This
mother drank while pregnant. Here is what her daughter?s like at 43. -
Fetal Alcohol Syndrome
- Problem
Drinkers Account For 60% Of UK Alcohol Sales
- When Kids Have to Act Like Parents, It Affects Them for Life
Stories
Rating Scales
Alcoholics Anonymous
Stages of Learned Behavior
Our survival involves learning what to avoid (i.e., fear) and what to approach (i.e.,
crave). Both fear and craving are essential for our survival, but both can spiral out of
control.
For example, an individual can develop a phobia about snakes in which the fear becomes
excessive. This phobia can develop into an obsession in which the individual spends much of
the time thinking about snakes, and how to avoid them.
This obsession can develop into a compulsion in which the individual spends much of the time
doing superstitious, compulsive, ritual behaviors aimed at avoiding snakes.
Likewise, an individual can develop an excessive craving for alcohol which causes
significant distress or disability.
This excessive craving for alcohol can develop into an obsession in which the individual
spends much of the time thinking about alcohol, and how to get it.
This obsession can develop into a compulsion in which the individual spends much of the time
compulsively drinking, and feeling powerless to resist this craving.
Four Stages of Fear and Craving
4 STAGES OF FEAR |
4 STAGES OF CRAVING |
Normal Fear:
Is in proportion to the actual danger, and doesn't cause significant
distress or disability.
|
Normal Craving:
Doesn't cause significant distress or disability.
|
Excessive Fear (Phobia):
Is out of proportion to the actual danger posed, and causes significant
distress or disability.
|
Excessive Craving:
Is not socially acceptable, and causes significant distress or disability
(e.g., "I'm using [alcohol] too much").
|
Obsessional Fear:
Persistent, unwanted or obsessional thoughts about the fear develop, which
cause significant distress or disability.
|
Obsessional Craving:
Persistent, unwanted or obsessional thoughts about the craving develop,
which cause significant distress or disability (e.g., "I spend much of my
time thinking about [alcohol], and how to get it").
|
Compulsive Fear:
Compulsive behaviors develop (aimed at reducing the anxiety associated with
the obsession), which the individual finds very hard to resist doing.
|
Compulsive Craving:
Compulsive behaviors develop (aimed at satisfying the craving), which the
individual finds very hard to resist doing (e.g., "I can't stop myself from
using [alcohol]").
|
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Dependence Syndrome Due To Alcohol F10.2 - ICD10 Description, World
Health Organization
Repeated alcohol use that typically includes a strong desire to take alcohol,
difficulties in controlling its use, persisting in its use despite harmful consequences,
a higher priority given to alcohol use than to other activities and obligations,
increased tolerance, and
a
physical
withdrawal state.
Alcohol Use Disorder - Diagnostic Criteria,
American Psychiatric Association
An individual diagnosed with Alcohol Use Disorder needs to meet all of the following
criteria:
- A problematic pattern of alcohol use leading to clinically significant
impairment or distress, as manifested by at least two of the following,
occurring within a 12-month period:
- Alcohol is often taken in larger amounts or over a longer period than was
intended.
- There is a persistent desire or unsuccessful efforts to cut down or control
alcohol use.
- A great deal of time is spent in activities necessary to obtain alcohol, use
alcohol, or recover from its effects.
- Craving, or a strong desire or urge to use alcohol.
- Recurrent alcohol use resulting in a failure to fulfill major role
obligations at work, school, or home.
- Continued alcohol use despite having persistent or recurrent social or
interpersonal problems caused or exacerbated by the effects of alcohol.
- Important social, occupational, or recreational activities are given up or
reduced because of alcohol use.
- Recurrent alcohol use in situations in which it is physically hazardous.
- Alcohol use is continued despite knowledge of having a persistent or
recurrent physical or psychological problem that is likely to have been
caused or exacerbated by alcohol.
- Tolerance, as defined by either of the following:
- A need for markedly increased amounts of alcohol to achieve intoxication
or desired effect.
- A markedly diminished effect with continued use of the same amount of
alcohol.
- Withdrawal, as manifested by either of the following:
- The characteristic withdrawal syndrome for alcohol:
- Cessation of (or reduction in) alcohol use that has been heavy and
prolonged.
- Two (or more) of the following, developing within several hours to a
few days after the cessation of (or reduction in) alcohol use:
- Autonomic hyperactivity (e.g., sweating or pulse rate greater
than 100 bpm).
- Increased hand tremor.
- Insomnia.
- Nausea or vomiting.
- Transient visual, tactile, or auditory hallucinations or
illusions.
- Psychomotor agitation.
- Anxiety.
- Generalized tonic-clonic seizures.
- Alcohol (or closely related substance, such as a benzodiazepine) is
taken to relieve or avoid withdrawal symptoms.
- Specify if:
- In early remission: After full criteria for Alcohol Use Disorder
were previously met, none of the criteria for Alcohol Use Disorder have
been met for at least 3 months but for less than 12 months (with the
exception that the criterion, "Craving, or
a
strong desire or urge to use alcohol," may be met).
- In sustained remission: After full criteria for Alcohol Use
Disorder were previously met, none of the criteria for Alcohol Use
Disorder have been met at any time during a period of 12 months or
longer (with the exception that the criterion,
"Craving,
or
a strong desire or urge to use alcohol," may be met).
- Specify if:
- In a controlled environment: This additional specifier is used if
the individual is in an environment where access to alcohol is
restricted.
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World Health Organization Alcohol Use Disorder Treatment
Guidelines
Drug Therapy For Alcoholism Doesn't Cure Alcoholism, But Often It Is The Only Thing
That Stops Drinking
Alcoholism is usually a chronic, episodic disorder associated with periods of sobriety
punctuated by episodes of drinking. Drug therapy aims at preventing or shortening these
relapses. In this regard, drug therapy for alcoholism can be very successful.
However, there is a serious limitation to drug therapy for alcoholism. Usually another
person must daily supervise the taking of these medications. Warning: Missing two consecutive days of these
medications often results in a drinking
relapse.
Secret drinking can be accurately detected with alcohol breathalyzers.
The most recent treatment guidelines released by the American Psychiatric Association state:
-
Naltrexone
and
acamprosate
have the best available evidence related to their benefits, and both have
minimal side effects. As such, they should be considered the preferred
pharmacological options for patients with moderate to severe Alcohol Use
Disorder who want to reduce drinking or achieve abstinence.
-
Naltrexone
is an opioid blocker which also blocks the pleasurable effect of
alcohol, thus decreases the urge to drink. It can be given in daily oral
form or as a month-long injection. Naltrexone can be safely used in
pregnancy. Naltrexone reduces relapse rates after abstinence and also
helps reduce heavy drinking in people who continue drinking during
treatment.
Naltrexone should be avoided in patients with acute hepatitis or liver
failure, or in patients currently taking opioids or who may be expected
to take opioids. In patients with co-occurring opioid use disorder,
naltrexone be prescribed to individuals who:
- wish to abstain from opioid use and either abstain from or
reduce alcohol use and
- are able to abstain from opioid use for a clinically appropriate
time prior to naltrexone initiation.
-
Acamprosate
decreases alcohol craving, anxiety and insomnia. It should be
avoided in patients with significant renal impairment. For individuals
with mild to moderate renal impairment, acamprosate should not be used
as a first-line treatment and, if used, the dose of acamprosate be
reduced compared with recommended doses in individuals with normal renal
function.
-
Disulfiram, gabapentin
and
topiramate
are also options for treatment of Alcohol Use Disorder but should typically
be considered after trying naltrexone and acamprosate, unless the patient has a
strong preference for one of these medications.
-
Disulfiram
when taken within 12-24 hours of consumption of alcohol causes a
person to get sick (elevated heart rate, flushed skin, headache, nausea,
and vomiting). Thus disulfiram can be used as "aversive conditioning" in
which alcoholic patients avoid alcohol in order to avoid having a
sickening disulfiram-alcohol interaction.
Disulfiram can be used to prove to alcoholic patients that they can't
stop drinking. Alcoholic patients are told that they will get sick if
they drink alcohol while taking disulfiram. Then, after they have been
alcohol-free for 48 hours, they are started on disulfiram. Soon
thereafter, alcoholic patients find that they can't stop drinking; hence
get sick with the alcohol-disulfiram reaction (despite the doctor's
warning). At this point, many patients realize that they are truly
addicted to alcohol and can't stop drinking (without help).
Disulfiram is suggested only to patients who wish to achieve abstinence
from drinking. Disulfiram can not be used in pregnancy.
Unfortunately, after years of use of disulfiram, some people develop a
peripheral neuropathy (e.g., foot drop) which would necessitate
disulfiram's termination.
- Patients taking
topiramate
are at an increased risk of cognitive dysfunction, dizziness, and
loss of appetite.
- Patients taking
gabapentin
may experience fatigue, insomnia, and headache.
- Antidepressant medications should not be used for treatment of Alcohol
Use Disorder unless there is evidence of a co-occurring disorder for which an
antidepressant is an indicated treatment.
- Benzodiazepines should not be used unless treating acute alcohol
withdrawal or unless a co-occurring disorder exists for which a benzodiazepine
is an indicated treatment.
- For pregnant or breastfeeding women with Alcohol Use Disorder,
pharmacological treatments should not be used unless treating acute alcohol
withdrawal with benzodiazepines or unless a co-occurring disorder exists that
warrants pharmacological treatment.
-
Addiction counselling
and regular attendance at
Alcoholics Anonymous
(or other 12-step self-help group) significantly improves treatment
outcome.
- Although residential rehabilitation programs are the most expensive of
all treatments for Alcohol Use Disorder; there are no randomized controlled
clinical trials that have yet proven the superiority of residential treatment
over non-residential, outpatient treatment.
APA Releases New Practice Guideline on Alcohol Use Disorder
Pharmacotherapy (2018)
New APA Practice Guideline on Alcohol Use Disorder
Pharmacotherapy (2018)
- Alcohol Use Disorder Treatment Guidelines
- Determining the relative
importance of the mechanisms of behavior change within Alcoholics Anonymous: a
multiple mediator analysis. (2012) Among out-patients the effect of AA
attendance on alcohol outcomes was explained primarily by adaptive social network
changes and increases in social abstinence self-efficacy. Among more impaired
aftercare patients, in addition to mediation through adaptive network changes and
increases in social self-efficacy, AA lead to better outcomes through ncreasing
spirituality/religiosity and by reducing negative emotion. The degree to which
mediators explained the relationship between AA and outcomes ranged from 43% to 67%.
- Does sponsorship improve
outcomes above Alcoholics Anonymous attendance? A latent class growth curve
analysis. (2012) Any pattern of Alcoholics Anonymous attendance, even if it
declines or is never high for a
particular 12-month period, is better than little or no attendance in terms of
abstinence. Greater initial attendance carries added value. There is a benefit for
maintaining a sponsor over time above that found for attendance.
- Do women differ from men on
Alcoholics Anonymous participation and abstinence? A multi-wave analysis of
treatment seekers. (2012) Women and men attended AA at similar rates and
similarly practiced specific AA
behaviors, and they were alike on most factors associated with AA participation and
abstention across time including abstinence goal, drink volume, negative
consequences, prior treatment, and encouragement to reduce drinking. Relative to
men, women with higher drug
severity
were less likely to participate in AA. Although higher AA participation was a
predictor of abstinence for both genders, men were less likely to be abstinent
across time. Men were also more likely to reduce their AA participation across time.
- Predictors of membership in
Alcoholics Anonymous in a sample of Successfully remitted alcoholics. (2011)
This study identifies factors associated with Alcoholics Anonymous (AA) membership
in a sample of 81
persons
who
have achieved at least one year of total abstinence from alcohol and other drugs.
Forty-four were AA members, 37 were not. Having more positive views of God and more
negative consequences of drinking were significantly associated with AA membership.
This information
can
be
used by clinicians to identify clients for whom AA might be a good fit, and can help
others overcome obstacles to AA or explore alternative forms of abstinence support.
- Driving while intoxicated
among individuals initially untreated for Alcohol Use Disorders: one- and
sixteen-year follow-ups. (2011) More extended participation in outpatient
treatment and Alcoholics Anonymous
(AA)
during Year 1 was associated with a lower likelihood of DWI at the 1-year follow-up.
More extended participation in AA through Year 3 was associated with a lower
likelihood of DWI at the 16-year follow-up. Improvement on personal functioning and
life context indices
was
associated with reduced risk of subsequent occurrences of DWI.
- How safe are adolescents at
Alcoholics Anonymous and Narcotics Anonymous meetings? A prospective
investigation with outpatient youth. (2011) Overall, youth reported feeling
very safe at meetings, and ratings
did
not
differ by age or gender. Reasons for discontinuation or nonattendance were unrelated
to safety or negative incidents.
- Meta-analysis of
pharmacological therapy with acamprosate, naltrexone, and disulfiram--a
systematic review. (2011) The meta-analysis is based on 16 randomized
controlled trials of acamprosate, 18 of naltrexone
and
7
of disulfiram. Acamprosate and naltrexone were 52% (RR = 1.52; 95% confidence
interval (CI): 1.35-1,72) and 27% (RR = 1.27; 95% CI: 1,06-1,52) better than placebo
when it came to supporting continuous abstinence. Acamprosate increased the total
number of abstinence
days
by
14% (MD = 14.02; 95% CI: 9.57-18.47). Disulfiram appeared to be effective only when
the intake was supervised. Based on the amount of scientific evidence, acamprosate
and naltrexone therapy should be increased in clinical practice in the treatment of
alcoholism.
- Mindfulness based
interventions for addictive disorders: a review. (2011) Results of six
clinical trials evaluating four different programs were found. Five studies were
controlled and four were randomized.
Drop-out
rates were relatively high (from 28 to 55%). In five cases out of six, the program
significantly reduced substance use. In four comparative trials out of five,
interventions based on mindfulness proved more effective than control conditions.
- A literature review of
cost-benefit analyses for the treatment of Alcohol Use Disorder. (2011) In
the psychotherapy studies, major benefits are typically seen within the first six
months of treatment. The
benefit-cost ratio ranged from 1.89 to 39.0. Treatment with acamprosate was found to
accrue a net benefit of 21,301 BEF (528 euros) per patient over a 24-month period in
Belgium and lifetime benefit for each patient in Spain was estimated to be Pta.
3,914,680 (23,528
euros). To date, only a few studies exist that have examined the cost-benefit of
psychotherapy or pharmacotherapy treatment of AD. Most of the available treatment
options for AD appear to produce marked economic benefits.
- Brief interventions for heavy
alcohol users admitted to general hospital wards. (2011) Objective: To
determine whether brief interventions reduce alcohol consumption and improve
outcomes for heavy alcohol users
admitted to general hospital inpatient units. Our results demonstrate that patients
receiving brief interventions have a greater reduction in alcohol consumption
compared to those in control groups at six month, MD -69.43 (95% CI -128.14 to
-10.72) and nine months
follow
up,
MD -182.88 (95% CI -360.00 to -5.76) but this is not maintained at one year. In
addition there were significantly fewer deaths in the groups receiving brief
interventions than in control groups at 6 months, RR 0.42 (95% CI 0.19 to 0.94) and
one year follow up, RR 0.60
(95% CI
0.40 to 0.91). Furthermore screening, asking participants about their drinking
patterns, may also have a positive impact on alcohol consumption levels and changes
in drinking behavior.
- How cognitive assessment
through clinical neurophysiology may help optimize chronic alcoholism treatment.
(2011) Although psychosocial treatments (e.g. individual or group therapy)
have historically been the
mainstay
of alcoholism treatment, a successful approach for alcohol dependence consists in
associating pharmacologic medications with therapy, as 40-70% of patients following
only psychosocial therapy typically resume alcohol use within a year of
post-detoxification treatment.
Nowadays, two main pharmacological options, naltrexone and acomprosate, both
approved by the US Food and Drug Administration, are available and seemingly improve
on the results yielded by standard techniques employed in the management of
alcoholism. However,
insufficient
data
exist to confirm the superiority of one drug over the other.
- The efficacy of disulfiram for
the treatment of Alcohol Use Disorder. (2011) Supervised treatment with
disulfiram has some effect on short-term abstinence and days until relapse as well
as number of drinking
days
when
compared with placebo, none, or other treatments for patients with alcohol
dependency or abuse. Long-term effect on abstinence has not been evaluated yet.
However, there is a need for more homogeneous and high-quality studies in the future
regarding the efficacy of
disulfiram.
- A systematic review and
meta-analysis of health care utilization outcomes in alcohol screening and brief
intervention trials. (2011) Systematic review results suggest that alcohol
screening and brief
intervention
has
little to no effect on inpatient or outpatient health care utilization, but it may
have a small, negative effect on ED utilization.
- Medical treatment of alcohol
dependence: a systematic review. (2011) The evidence base for oral
naltrexone (6% more days abstinent than placebo in the largest study) and topiramate
(prescribed off-label) (e.g.,
26.2%
more days abstinent than placebo in a recent study) is positive but modest.
Acamprosate shows modest efficacy with recently abstinent patients, with European
studies showing better results than U.S. ones. The evidence-base for disulfiram is
equivocal. Depot naltrexone
shows
efficacy (25% greater reduction in rate of heavy drinking vs. placebo, in one of the
largest studies) in a limited number of studies. Some studies suggest that patients
do better with extensive psychosocial treatments added to medications while others
show that brief
support
can be equally effective.
- Does Teen
Drug Rehab Cure Addiction or Create It? (2010)
- Following problem drinkers
over eleven years: understanding changes in alcohol consumption. (2010)
Results suggest that problem and dependent drinkers continue to drink at an elevated
level over the course of
years.
Gatekeepers, family members, and policymakers should encourage and facilitate
contact with social service agencies and with AA for problem drinkers. Suggestions
from others to do something about one's drinking and seeking specialty care occur
more often in those with
more
severe problems and do not appear to be linked to less drinking over time.
- Negative emotion, relapse, and
Alcoholics Anonymous (AA): does AA work by reducing anger? (2010) Findings
revealed substantially elevated levels of anger in those attending AA compared with
the general
population
(98th
percentile) that decreased over 15-month follow-up but remained high (89th
percentile). AA attendance was associated with better drinking outcomes, and higher
levels of anger were associated with heavier drinking. However, AA attendance was
unrelated to changes in
anger.
- Mechanisms of behavior change
in alcoholics anonymous: does Alcoholics Anonymous lead to better alcohol use
outcomes by reducing depression symptoms? (2010) AA attendance was
associated both concurrently and
predictively with improved alcohol outcomes. Although AA attendance was associated
additionally with subsequent improvements in depression, it did not predict such
improvements over and above concurrent alcohol use. AA appears to lead both to
improvements in alcohol
use
and
psychological and emotional wellbeing which, in turn, may reinforce further
abstinence and recovery-related change.
- Opioid antagonists for alcohol
dependence. (2010) Naltrexone reduced the risk of heavy drinking to 83% of
the risk in the placebo group RR 0.83 (95% CI 0.76 to 0.90) and decreased drinking
days by about 4%, MD
-3.89
(95% CI -5.75 to -2.04). Naltrexone appears to be an effective and safe strategy in
alcoholism treatment; even though the sizes of treatment effects might appear
moderate in their magnitudes.
- A comprehensive review:
methodological rigor of studies on residential treatment centers for
substance-abusing adolescents. (2009) Out of the four most rigorous studies
reviewed, two found significant
differences
in
substance use reduction between the treatment and comparison groups. Of the
remaining studies, despite having strong selectivity bias, only one found
significant differences between treatment and comparison groups, and it was for
females only at the one-year
follow-up.
- Effectiveness and
cost-effectiveness of policies and programmes to reduce the harm caused by
alcohol. (2009) Systematic reviews and meta-analyses show that policies
regulating the environment in which alcohol
is
marketed (particularly its price and availability) are effective in reducing
alcohol-related harm. Enforced legislative measures to reduce drink-driving and
individually directed interventions to already at-risk drinkers are also effective.
However, school-based
education
does not reduce alcohol-related harm, although public information and education-type
programmes have a role in providing information and in increasing attention and
acceptance of alcohol on political and public agendas. Making alcohol more expensive
and less
available,
and
banning alcohol advertising, are highly cost-effective strategies to reduce harm.
- Acupuncture for alcohol
dependence: a systematic review. (2009) The poor methodological quality and
the limited number of the trials do not allow any conclusion about the efficacy of
acupuncture for treatment
of
alcohol dependence.
- Epidemiology of alcoholics
anonymous participation. (2008) Fully one-half of those completing AA's most
recent membership survey reported that they had been abstinent for more than 5
years. Disengagement from
AA
does
not appear to necessarily translate to loss of abstinence among those with initial
high levels of AA exposure, but long-term abstinence is more likely among those with
continued engagement.
- The Surgeon General's Call to
Action To Prevent and Reduce Underage Drinking (2007)
Treatment Evaluation
Crime
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Alcohol Abuse Treatment and Self-Help

Self-Help Groups for Alcohol Addiction
Monitoring Your Progress
NOTE: When each of the following presentations finish; you must exit
by manually closing its window in order to return to this webpage.
The Healthy Social Behavior Scale lists social behaviors that research has
found to be associated with healthy social relationships. You can keep score (totaling its
4-point scale answers) on a separate piece of paper to monitor your progress.
The Mental Health Scale lists behaviors and symptoms that research has found
to be associated with mental health (or disorder). You can keep score (totaling its 4-point
scale answers) on a separate piece of paper to monitor your progress.
The Life Satisfaction Scale lists the survey questions often used to measure
overall satisfaction with life. You can keep score (totaling its 4-point scale answers) on a
separate piece of paper to monitor your progress.

Life
Satisfaction Scale (5-Minute Video)
The "Big 6" Dimensions of Mental Health
Research has shown that there are 5 major dimensions (the "Big 5 Factors" or
Five-Factor
Model) of personality disorders and other mental
disorders.
This website uses these 5 major dimensions of human behavior (i.e., Agreeableness,
Conscientiousness, Openness/Intellect, Extraversion/Sociability, and Emotional
Stability) to describe all mental disorders. This website adds one more dimension,
"Physical Health", to create the "Big 6" dimensions of mental health.
The behaviors of the "Five Factor Model of Personality" represent five adaptive functions
that are vital to human survival. For example, when one individual approaches another, the
individual must: (1) decide whether the other individual is friend or foe [
"Agreeableness"
], (2) decide if this represents safety or danger [
"Emotional Stability"
], (3) decide whether to approach or avoid the other individual [
"Extraversion/Sociability"
], (4) decide whether to proceed in a cautious or impulsive manner [
"Conscientiousness"
], and (5) learn from this experience [
"Openness/Intellect"
].

Desiderata
(5-Minute Video)

The following "Morning Meditation" allows you to plan your day using these "Big 6"
dimensions of mental health.
The following "Evening Meditation" allows you to review your progress on these "Big 6"
dimensions of mental health.
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"In physical science a first essential step in the direction of learning any
subject is to find principles of numerical reckoning and practicable methods for
measuring some quality connected with it. I often say that
when you can measure what you are speaking about and express it in
numbers you know something about it; but when you cannot measure it,
when you cannot express it in numbers, your knowledge is of a meagre and
unsatisfactory kind: it may be the beginning of knowledge,
but you have scarcely, in your thoughts, advanced to the stage of science,
whatever the matter may be."
Lord Kelvin (1824 – 1907)
- The best
summary on bad research is given by Laura Arnold in this TEDx lecture.
If you read nothing else about research, you owe it to
yourself to watch this short video - it is excellent!
- Economist in grim battle against deceptive scholarship
- List of Predatory
Journals and Publishers
- The power
of asking "what if?"
- The active placebo effect: 2300 years ago, the Greek Stoic philosophers
taught that it is not the objective event, but our subjective
judgment about the event, that determines our behavior. The active placebo
effect bears witness to this ancient wisdom.
- Criteria For High Quality Research Studies
It is
troubling that a recent study found that two-thirds of important psychological research studies couldn't
be replicated. High quality research must meet the following
criteria:
-
Randomized Controlled Trial:
Ask: Was the trial randomized? Was the randomization
procedure described and was it appropriate?
The best research design is to have research subjects randomly assigned
to an experimental or control group. It is essential that confounding
factors be controlled for by having a control group or comparator condition
(no intervention, placebo, care as usual etc.).
-
Representative Sample:
Ask: Do the research subjects represent a normal
cross-section of the population being studied?
Many psychological research studies using university students are
flawed because their subjects are not representative of the normal
population since they are all W.E.I.R.D. (White, Educated, Intelligent,
Rich, and living in a Democracy).
-
Single Blind Trial:
Ask: Was the treatment allocation concealed?
It is essential that the research subjects are kept "blind" as to
whether they are in the experimental or control group (in order to control
for any placebo effects).
-
Double Blind Trial (Better Than Single Blind Trial):
Ask: Were blind outcome assessments conducted?
In a double blind study, neither the research subjects nor the outcome
assessors know if the research subject is in the experimental or control
group. This controls for both the placebo effect and assessor bias.
-
Baseline Comparability:
Ask: Were groups similar at baseline on prognostic
indicators?
The experimental and control groups must be shown to be comparable at
the beginning of the study.
-
Confounding Factors:
Ask: Were there factors, that weren't controlled for,
that could have seriously distorted the study's results?
For example, research studies on the effectiveness of mindfulness cognitive therapy in
preventing depressive relapse forgot to control for whether the research
subjects were also simultaneously receiving antidepressant medication or
other psychological treatments for depression.
-
Intervention Integrity:
Ask: Was the research study protocal strictly
followed?
The research subjects must be shown to be compliant (e.g., taking their
pills, attending therapy) and the therapists must be shown to be reliably
delivering the intervention (e.g., staying on the research protocol).
-
Statistical analysis:
Ask: Was a statistical power calculation described?
The study should discuss its statistical power analysis; that is
whether the study size is large enough to statistically detect a difference
between the experimental and control group (should it occur) and usually
this requires at least 50 research subjects in the study.
Ask: Are the results both statistically
significant and clinically significant?
Many medical research findings are statistically significant
(with a p-value <0.05), but they are not clinically significant
because the difference between the experimental and control groups is
too small to be clinically relevant.
For example, the effect of a
new drug may be found to be 2% better than placebo. Statistically (if
the sample size was large enough) this 2% difference could be
statistically significant (with a p-value <0.05). However,
clinicians would say that this 2% difference is not
clinically significant (i.e., that it was too small to really
make any difference).
Statistically, the best way to test for
clinical significance is to test for effect size (i.e., the
size of the difference between two groups rather than confounding
this with statistical probability).
When the outcome of
interest is a dichotomous variable, the commonly used measures of
effect size include the odds ratio (OR), the relative risk (RR), and
the risk difference (RD).
When the outcome is a continuous
variable, then the effect size is commonly represented as either the
mean difference (MD) or the standardised mean difference (SMD)
.
The MD is the difference in the means of the treatment
group and the control group, while the SMD is the MD divided by the
standard deviation (SD), derived from either or both of the groups.
Depending on how this SD is calculated, the SMD has several versions
such, as Cohen's d, Glass's Δ, and Hedges' g.
Clinical Significance: With Standard Mean Difference, the
general rule of thumb is that a score of 0 to 0.25 indicates
small to no effect, 0.25-0.50 a mild benefit, 0.5-1 a moderate
to large benefit, and above 1.0 a huge benefit. It is a
convention that a SMD of
0.5
or larger is a standard threshold for clinically
meaningful benefit. The statistical summary
should report what percentage of the total variance of the dependent
variable (e.g., outcome) can be explained by the independent
variable (e.g., intervention).
In clinical studies, the study
should report the number needed to treat for an additional
beneficial outcome (NNTB), and the number needed to treat for
an additional harmful outcome (NNTH).
Number Needed To Benefit (NNTB): This is defined as the
number of patients that need to be treated for one of them to
benefit compared with a control in a clinical trial. (It is
defined as the inverse of the absolute risk reduction.)
Note: Statistically, the NNTB depends on which control group is used for
comparison - e.g., active treatment vs. placebo
treatment, or active treatment vs. no
treatment.
Number Needed To Harm (NNTH): This is
defined as the number of patients that need to be treated for
one of them to be harmed compared with a control in a clinical
trial. (It is defined as the inverse of the absolute increase in
risk of harm.)
Tomlinson found “an NNTB of 5 or less was probably associated
with a meaningful health benefit,” while “an NNTB of 15
or more was quite certain to be associated with at most a small
net health benefit.”
Ask: Does the researcher accept full
responsibility for the study's statistical analysis?
The researcher should not just hand over the study's raw
data to a corporation (that may have $1,000 million invested in the
study) to do the statistical analysis.
-
Completeness of follow-up data:
Ask: Was the number of withdrawals or dropouts in each
group mentioned, and were reasons given for these withdrawals or
dropouts?
Less than 20% of the research subjects should drop out of the study.
The intervention effect should persist over an adequate length of time.
-
Handling of missing data:
Ask: Was the statistical analysis conducted on the
intention-to-treat sample?
There must be use of intention-to-treat analysis (as opposed to a
completers-only analysis). In this way, all of the research subjects that
started the study are included in the final statistical analysis. A
completers-only analysis would disregard those research subjects that
dropped out.
-
Replication of Findings:
Ask: Can other researchers replicate this study's
results?
The research study's methodology should be clearly described so that
the study can be easily replicated. The researcher's raw data should be
available to other researchers to review (in order to detect errors or
fraud).
-
Fraud:
Ask: Is there a suspicion of fraud?
In a research study, examine the independent and dependent variables
that are always measured as a positive whole number (e.g., a variable
measured on a 5-point Likert-type scale ranging from "1 = definitely
false to 5 = definitely true" etc.). For each of these
variables, look at their sample size (
n
), mean (
M
) and standard deviation (
SD
) before they undergo statistical analysis. There is a high suspicion of
fraud in a study's statistics:
- If the M is mathematically impossible (online
calculator): This is one of the easiest ways to
mathematically detect fraud. The mean (
M
) is defined as "the sum (
Sum
) of the values of each observation divided by the total number
(
n
) of observations". So:
M
=
Sum
/
n
. Thus: (
Sum
) = (
M
) multiplied by (
n
). We know that, if a variable is always measured as a positive
whole number, the sum of these observations always has to be a whole
number. For these variables to test for fraud: calculate (
M
) multiplied by (
n
). This calculates the
Sum
which MUST be a positive whole number. If the calculated
Sum
isn't a positive whole number; the reported mean (
M
) is mathematically impossible - thus the researcher either
cooked the data or made a mistake. A recent study of 260 research papers
published in highly reputable psychological journals found that
1 in 2 of these research papers reported at
least one impossible value
, and 1 in 5 of these research papers reported multiple
impossible values. When the authors of the 21 worst offending
research papers were asked for their raw data (so that its
reliability could be checked) - 57% angrily refused. Yet such
release of raw data to other researchers is required by most
scientific journals. (Here is an example of a research paper filled with mathematically
impossible means.)
- If the SD is mathematically impossible (online
calculator): When researchers fraudulently "cook" their
data, they may accidently give their data a mean and standard
deviation that is mathematically impossible.
- If the
SD/M is very small
(i.e., the variable's standard deviation is very small compared
to the mean suggesting data smoothing).
- If the
SD's are almost identical
(i.e., the variables have different means but almost identical
standard deviations).
- If the 4th digit of the values of the variables aren't uniformly
distributed - since each should occur 10% of the time (Benford's Law).
- If the researcher is
legally prevented from publishing negative
findings
about a drug or therapy because that would violate the
"nondisclosure of trade secrets" clause in the research contract
(i.e., it is a "trade secret" that the drug or therapy is
ineffective - hence this can not be "disclosed"). Approximately half of all registered clinical
trials fail to publish their results.
- If the
researcher refuses to release his raw data to
fellow researchers
(so that they can check its validity). In order to be published
in most scientific journals, a researcher must promise to share his
raw data with fellow researchers. Thus a researcher's refusal to do
so is almost a sure indicator of fraud.
- If the
research study's data contradicts the study's
own conclusions
- surprisingly, this often occurs.
- Calling Bullshit
In The Age of Big Data - "Bullshit is language, statistical figures,
data graphics, and other forms of presentation intended to persuade by
impressing and overwhelming a reader or listener, with a blatant disregard for
truth and logical coherence." Reading the syllabus of this university course
should be required reading for every student of mental health. This syllabus is
absolutely fantastic!
- Statistical Methods in Psychology Journals: Guidelines and
Explanations - American Psychologist 1999
- Not All Scientific Studies Are Created Equal - video
- The
efficacy of psychological, educational, and behavioral treatment
- Estimating the reproducibility of psychological science
- Psychologists grapple with validity of research
- Industry sponsorship and research outcome (Review) -
Cochrane Library
- 'We've been deceived': Many clinical trial results are
never published - (text and video)
- Junk
science misleading doctors and researchers
- Junk science under spotlight after controversial firm buys
Canadian journals
- Medicine with a side of mysticism: Top hospitals promote
unproven therapies - Are some doctors becoming modern witchdoctors?
- When Evidence Says No, But Doctors Say Yes
- Cochrane Reviews (the best evidence-based, standardized
reviews available)
Research Topics
Alcohol Use Disorder - Core Clinical Journals
Alcohol User Disorder - All Journals
Alcohol Use Disorder - Review Articles - Core Clinical
Journals
Alcohol Use Disorder - Review Articles - All Journals
Alcohol Use Disorder - Treatment - Core Clinical
Journals
Alcohol Use Disorder - Treatment - All Journals
Warning:
There Is No Safe Dose Of Alcohol - The Lancet
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