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. Author manuscript; available in PMC: 2017 Jan 1.
Published in final edited form as: Psychiatr Serv. 2016 Feb 29;67(7):771–778. doi: 10.1176/appi.ps.201500259

TABLE 2.

Six-month violence risk factor scores in a follow-up sample of 2,579 participants with mental illnesses

Characteristic Violence factor scorea
Test statistic df p
M SD Range
Overall score for follow-up sample −.39 .57 −.64 to 3.38
Sex F=15.49 1, 2,577 <.001
 Male −.42 .53 −.64 to 3.38
 Female −.33 .63 −.64 to 2.64
Race-ethnicity F=2.02 3, 2,575 .109
 White −.38 .54 −.64 to 2.79
 Black −.38 .61 −.64 to 3.38
 Hispanic −.44 .54 −.64 to 1.98
 Other −.55 .38 −.64 to 1.25
Primary diagnosis F=62.40 4, 2,567 <.001
 Schizophrenia −.50 .47 −.64 to 3.38
 Bipolar disorder −.33 .61 −.64 to 2.64
 Major depression −.15 .68 −.64 to 2.79
 Substance use disorder −.05 .68 −.64 to 2.62
 Other −.16 .57 −.64 to 1.39
Alcohol use F=40.21 2, 2,570 <.001
 Abstinence −.47 .49 −.64 to 2.62
 Nonproblematic use −.37 .56 −.64 to 2.62
 Problematic use −.24 .68 −.64 to 3.38
Drug use F=28.83 2, 2,566 <.001
 Abstinence −.45 .52 −.64 to 2.64
 Nonproblematic use −.35 .57 −.64 to 2.24
 Problematic use −.25 .68 −.64 to 3.38
Recent hospitalization (past 6 months) F=114.76 1, 2,576 <.001
 No −.51 .49 −.64 to 3.38
 Yes −.27 .62 −64 to 2.79
Age r=−.22 <.001
Psychiatric symptoms
 Affect r=.15 <.001
 Positive symptoms r=−.08 <.001
 Negative symptoms r=−.14 <.001
 Disorganized cognitive processing r=−.15 <.001
Recent violence (past 6 months) r=.40 <.001
Recent victimization (past 6 months) r=.32 <.001
a

Higher violence factor scores indicate greater prevalence or severity of violence.