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Table 1 Mean (SD) comparisons between violent and non-violent groups after controlling for age and gender as co-variants. Effect sizes and AUC for receiver operator characteristics (ROC)

From: Prospective cohort study of the relationship between neuro-cognition, social cognition and violence in forensic patients with schizophrenia and schizoaffective disorder

  ANOVA Effect size Receiver operating characteristic
  Non-violent n = 79 Violent n = 10 F-statistic (df 1,87) P value Partial Eta squared   95 % CI   95 % CI
  mean S.D. mean S.D.     d lower upper AUC lower upper
Age 40.9 12.7 36.1 9.4 1.342 0.250 - 0.38 −0.27 1.04 0.62 0.45 0.80
Length of stay (years) 8.0 9.7 3.0 5.0 2.243 0.13 - 0.50 −0.16 1.16 0.73 0.54 0.91
Chlorpromazine equivalents 538 366 772 397 3.6 0.063 - 0.64 −0.03 1.30 0.67 0.46 0.88
Pre-morbid IQ (TOPF-UK) 96.0 12.6 96.8 8.1 0.023 0.879 - 0.06 −0.72 0.84 .49 0.31 0.67
PANSS total 62.5 20.0 90.1 19.4 12.2 0.001 .157 1.38 0.58 2.19 0.84 0.71 0.97
PANSS positive 13.7 7.0 21.6 8.7 9.32 0.003 .113 1.21 0.41 2.01 0.79 0.65 0.93
PANSS negative 18.9 7.9 25.0 6.5 6.175 0.111 .078 0.98 0.19 1.78 0.71 0.55 0.87
PANSS general 29.02 10.3 43.6 10.4 14.202 .000 .163 1.49 0.68 2.31 0.86 0.73 0.99
HCR-20 total score 20.8 5.7 28.2 8.0 14.04 0.000 .142 1.26 0.57 1.94 0.78 0.59 0.96
HCR-20 Historical 12.9 2.7 15.2 4.5 5.178 .025 .057 0.763 0.09 1.43 0.75 0.55 0.95
HCR-20 Current 4.50 2.63 7.2 2.78 12.59 .001 .129 1.91 0.51 1.87 0.76 0.59 0.94
HCR-20 Risk 3.39 2.12 5.80 2.29 10.06 .002 .106 1.064 0.39 1.74 0.77 0.62 0.71
SOFAS 59.2 17.2 35.6 18.9 14.9 0.001 - 1.29 0.61 1.98 0.83 0.66 0.99
DUNDRUM-1 (11 item) 29.54 5.01 27.40 7.1 .994 0.322 .012 0.334 −0.33 0.99 0.44 0.21 0.66
DUNDRUM-1 (9 item) 27.08 3.93 23.90 6.93 3.275 0.074 .037 0.607 −0.06 1.27 0.38 0.16 0.60