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Table 3 Psychopathology among convicted homicide offenders

From: Mental illness and violent behavior: the role of dissociation

Study Data source and timeframe Population N Diagnoses represented in study
Fazel & Grann (2004) [8]a Sweden state crime register 1988–2011, 14-year timeframe Convicted homicide offenders, 91.7% male 2005 Substance use disorder (19.7%)
Personality disorder (11.3%)
Schizophrenia (8.9%)
Other psychotic disorder (6.5%)
Mood disorder (4.8%)
Anxiety disorder (1.4%)
Adjustment disorder (2.8%)
Drug-induced or organic psychosis (2.4%)
Intellectual disability (0.6%)
PTSD (0.5%)
Other axis I disorder (11.9%)
No diagnosis (8%)
Flynn et al. (2011) [9]a UK and Wales National Confidential Inquiry into Suicide and Homicide by People with Mental Illness (NCI), 1997–2004, 8-year timeframe Convicted homicide offenders, 90% male 4752 Substance use disorder (8.22%)
Personality disorder (6.71%)
Mood disorder (6.32%)
Schizophrenia (5.8%)
No diagnosis (68.33%)
Rodway et al. (2014) [13] a UK and Wales National Confidential Inquiry into Suicide and Homicide by People with Mental Illness (NCI), 2003–2005, 3-year timeframe Convicted homicide offenders, 90% male 28 Schizophrenia or delusional disorder (50%)
Personality disorder (21%)
Substance use disorder (15%)
Mood disorder (4%)
No diagnosis (10%)
Simpson et al. (2004) [14] a Homicide Monitoring Database of the New Zealand Police/Law Enforcement System, New Zealand, 1970–2000, 30-year timeframe Convicted homicide offenders, 68% male 1498 Schizophrenia (3.67%)
Other psychotic disorder (1.27%)
Mood disorder (1.2%)
Personality disorder (0.73%)
Substance use disorder (0.67%)
Neurocognitive disorder (0.60%)
Intellectual disability (0.60%)
No diagnosis (91.3%)
Wilcox (1985) [27]a Contra Costa County, California Coroner’s Office (US), 1978–1980, 3-year timeframe Convicted homicide offenders, gender demographics N/A 71 Antisocial personality disorder (32.4%)
Substance use disorder (19.7%)
Schizophrenia (9.85%)
Neurocognitive disorder (2.82%)
Adjustment disorder (1.41%)
Substance-induced psychotic disorder (1.41%)
Substance-induced psychotic disorder (1.41%)
Other personality disorder (1.41%)
No diagnosis (31%)
  1. aArrest records