Prevalence

Prevalence of psychiatric disorder and self-harm in sentenced prisoners

Prevalence of psychiatric disorder and self-harm in sentenced prisoners
Study 1: Gunn J, Maden A, Swinton M. Treatment needs of prisoners with psychiatric disorders. British Medical Journal 1991; 303: 338-341 Aimed to identify those prisoners with psychiatric disorders needing treatment
Disorder or condition
Population
Prevalence of men (%)
Psychosis (including schizophrenia)
studied 1365 men at five local, 10 training and two open prisons
2.4
Affective psychosis
0.5
Neurotic disorders
5.2
Personality disorder
7.3
Alcohol dependence
8.6
Drug dependence
10.1

 

Prevalence of psychiatric disorder and self-harm in sentenced prisoners
Study 2: Singleton N, Meltzer H, Gatward R, Coid J, Deasy D. Psychiatric Morbidity of Prisoners in England and Wales. London: ONS, 1998 Aimed to provide baseline information about the prevalence of psychiatric disorders in prisons in order to inform policy decisions about services
Disorder or condition
Population
Prevalence of men (%)
Prevalence of women (%)
Any schizophrenic or delusional disorder (b)
studied 1121 men and 584 women aged 16-64 years in a random, national sample of all prisons
6
13
Affective psychosis (b)
1
2
Neurotic disorders
40
63
Personality disorder (b)
64
50
Alcohol dependence (a)
30
19
Drug dependence (opiates, stimulants or both)
34
36
Suicide attempt in the last year
7
16
Self-harm (not a suicide attempt) in the current prison term
7
10
a Measured as AUDIT = 30.
b Prevalence of schizophrenic or delusional disorders, affective psychosis and personality disorder was made from a combined sentenced and remand female sample.

Prevalence of psychiatric disorder and self-harm in remand prisoners

Prevalence of psychiatric disorder and self-harm in remand prisoners
Study 1: Maden A, Taylor CJA, Brooke D, Gunn J. Mental Disorders in Remand Prisoners. London: Department of Forensic Psychiatry, Institute of Psychiatry, 1995
Disorder or condition
Population
Prevalence of men and women combined (%)
Schizophrenia, psychosis or a delusional disorder
studied 544 men, 206 young offenders and 245 women in a random national sample
5.5
Neurotic disorder
19.1
Personality disorder
11.0
Substance misuse
39.0

 

Prevalence of psychiatric disorder and self-harm in remand prisoners
Study 2: Singleton N, Meltzer H, Gatward R, Coid J, Deasy D. Psychiatric Morbidity of Prisoners in England and Wales. London: ONS, 1998
Disorder or condition
Population
Prevalence of men (%)
Prevalence of women (%)
Any schizophrenic or delusional disorder (b)
studied 1250 men and 187 women aged 16-64 years ina random national sample of all prisons
9
13
Affective psychosis (b)
2
2
Neurotic disorders
59
76
Personality disorder (b)
78
50
Alcohol dependence (a)
30
20
Drug dependence (opiates, stimulants or both)
43
52
Suicide attempt in the last year
15
27
Self-harm (not a suicide attempt) in the current prison term
5
9
a Measured as AUDIT = 30.
b Prevalence of schizophrenic or delusional disorders, affective psychosis and personality disorder was made from a combined sentenced and remand female sample.

Prevalence of selected risk factors for mental disorder

Prevalence of selected risk factors for mental disorder
Singleton et al. 1998
Experience
Men sentenced (%)
Men remand (%)
Women sentenced (%)
Women remand (%)
In Local Authority care as child
26
33
25
29
Victim of violence in the home at any time in the past
25
28
48
51
Victim of sexual abuse at any time in the past
8
9
31
34

Prevalence of mental disorders among community and delinquent samples of adolescents

Prevalence of mental disorders among community and delinquent samples of adolescents
Disorder or condition
Community samples (%)
Delinquent samples (%)
Conduct disorder
2-10
41-90
Attention deficit disorders
2-10
19-46
Substance abuse and dependence
2-5
25-50
Mental retardation
1-3
7-15
Learning and academic disabilities
2-10
17-53
Mood disorders
2-8
19-78
Anxiety disorders
3-13
6-41
Post-traumatic stress disorders
1-3
32
Psychosis and autism
0.2-2
1-6
Any disorder present
18-22
80
Source: Kazdin AE. Adolescent development, mental disorders and decision making of delinquent youths. In Grisso T, Schwartz RG (eds), Youth on Trial: A Developmental Perspective on Juvenile Justice. Chicago: University of Chicago Press, 2000, vol. 2, pp. 33-64.
Evidence is summarised from a range of studies. The levels of disorders in adolescents held in detention centres or prisons tend to be towards the higher end of the range.