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Psychiatric Disorders Among Prisoners
SIX-MONTH PREVALENCE OF PSYCHIATRIC DISORDERS: MALES AGED 18-44 YEARS
  Inmates Population Inmate/Pop
Any Disorder 77% 23%   3.3     
Alcohol Abuse 51% 13%   3.8     
Drug Abuse 24% 4%   5.5     
Antisocial Personality 48% 5%   9.6     
Manic Episode 3% 0.6%   5.5     
Major Depression 14% 3%   4.1     
Panic Disorder 7% 0.5%   13.4     
Phobia 4% 1.7%   2.3     
Obsessive-Compulsive 8% 1.5%   5.5     
Schizophrenia 2% 0.4%   5.5     
Suicide Attempt (Ever) 23% 3%   7.1     


 
Most people who work in and around corrections have long ago noted the apparent high rate of mental disorder among prisoners. This observation was tested here by administering a structured interview, the Diagnostic Interview Schedule to a group of prisoners (N=180) and comparing the findings with results from the general population (N=924). Respondents were males aged 18-44 years, resident in Edmonton, Canada. The prisoners were incarcerated in a provincial jail for relatively minor infractions (B & E, impaired driving, theft under $1000, etc.). Population figures were adjusted to match the distributions for age and marital status among the prisoners. The Table shows the proportions from each sample with a mental disorder during the six months prior to testing. For example, 23% of the general population showed at least one disorder (of any kind) versus 77% among the inmates (the lifetime figure for prisoners is 92%!). All disorders showed higher figures for the prisoners, with the rate-ratios ranging from 2.3 for phobia to 13.4 for panic disorder. This, coupled with the high involvement in suicidal behaviour, does not paint the picture of the cold, competent criminal that appears in popular movies and books. Rather we have individuals who are severely socially and psychiatrically disadvantaged, who rarely receive appropriate treatment. It is difficult to see how this approach to corrections helps anyone.
Source: Bland RC, Newman SC, Thompson AH, Dyck RJ (1998). Psychiatric disorders in the population and in prisoners. International Journal of Law and Psychiatry 21, 273-279.   Click here for a copy of the full paper
 
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