Table 2 Factors examined in at least two studies

Demographics

 Age

16

1

5

1

4

5

 Female sex

8

1

3

1

3

 Male sex

9

1

2

1

1

4

 White ethnicity

5

1

2

2

 Afro-caribbean/African-american ethnicity

4

2

1

1

 Asian ethnicity

3

2

1

 Mixed ethnic background

2

1

1

 Immigrant

2

1

1

Education/Employment

 No or special primary education

2

1

1

 Any level of education

5

1

1

2

1

 No employment history

4

1

1

2

 Any employment history

8

2

3

1

2

Family Status

 Married/engaged

4

1

2

1

 Single or in unstable relationship

4

1

1

2

 Widowed

2

1

1

 Divorced

2

1

1

 Parent

2

1

1

Admission Source

 Community

2

1

1

 High-security hospital

2

1

1

 Medium-secure unit

2

1

1

 Prison or court

2

1

1

Diagnosis

 Adjustment disorder

2

1

1

 Affective disorders

6

1

2

1

2

 ASD¹ / Pervasive developmental disorders

4

2

2

 Anxiety disorders

4

1

1

2

 Bipolar

3

1

1

1

 Depression

2

2

 Impulse control disorder

2

1

1

 Intellectual or Learning Disability

4

1

1

2

 Organic mental disorders

4

1

3

 Personality disorders

9

2

1

2

2

2

 Personality disorders– Cluster B

2

1

1

 Sexual preference disorder

4

1

2

1

 Schizophrenia-spectrum disorder

6

1

1

2

1

1

 Schizophrenia

3

2

1

 Schizoaffective Disorder

2

1

1

 Substance use disorders

9

2

3

4

 Substance-induced Psychosis

2

1

1

 Psychosis-related

11

1

1

2

1

1

1

4

Scores

 IQ² score

3

2

1

 GAF³ Score

3

2

1

 DUNDRUM-1⁴ Total Score

2

1

1

 HCR20⁵ Score– Clinical

3

1

1

1

 HCR20 Score– Historical

3

1

2

 HCR20 Score– Risk

3

1

2

 HCR20 Score– Total

4

2

1

1

Forensic History

 Age at first conviction

4

2

1

1

 Any previous convictions

3

3

 Number of previous convictions/sentences/incarcerations

3

2

1

 Presence of previous major offence

4

1

1

2

 History of previous incompetencies to stand trial

2

2

 Amount of previous forensic treatment

3

1

2

Psychiatric History

 Previous psychiatric treatment

7

1

1

1

2

2

 Duration of mental illness in years

2

1

1

 Number of previous psychiatric admissions

5

1

1

1

2

Other history

 Family history of mental illness

2

1

1

 Any past history of abuse

4

1

3

Index Offence

 Age at index offence

2

1

1

 Index offence of sexual nature

9

1

2

1

1

1

3

 Index offence of homicide or attempted homicide

8

1

1

2

1

3

 Major index offence

20

3

2

3

1

2

3

2

4

 Minor index offence

8

2

2

1

3

 Nil offence

3

2

1

 Index offence under influence of alcohol/psychoactive substances

2

1

1

Institutional Aggression

 Violence to others

4

2

1

1

 Number of acts of violence

2

1

1

 Presence of violence to self

2

2

 Amount of absconding

2

1

1

 Seclusion and/or restraint

5

1

1

1

2

Legal Category/Status

 Legal category– Mental Illness

3

1

1

1

 Legal category– Psychopathic Disorder

3

1

1

1

 Legal status– civil

6

1

2

1

2

 Legal status– prison transfer

5

1

1

1

2

 Legal status– criminal section

5

1

1

1

2

 Legal status– criminal section with restrictions

7

1

1

2

1

2

 Legal status– no criminal responsibility

4

2

1

1

 Legal status– remand order

3

1

1

1

Treatment

 Psychotherapy engagement

2

1

1

 Attendance of groups while admitted

2

1

1