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. 2015 Mar;60(3):117–126. doi: 10.1177/070674371506000306

Table 3.

Cox regression predicting time before absolute discharge from the Review Board

Covariates Likelihood of being absolutely discharged

Total British Columbia Ontario Quebec
Province (Quebec as reference), OR (95% CI)
  Ontario 0.37 (0.32 to 0.43)a
  British Columbia 0.74 (0.62 to 0.88)a
Number of past criminal convictions, ln, OR (95% CI) 1.12 (0.87 to 1.43) 0.74 (0.60 to 0.92)b 0.68 (0.56 to 0.81)a 0.78 (0.72 to 0.85)a
Diagnosis at NCRMD verdict, OR (95% CI)
  Psychosis spectrum disorder 0.68 (0.54 to 0.87)b 0.34 (0.17 to 0.66)b 1.08 (0.57 to 2.06) 0.67 (0.51 to 0.88)b
  Mood disorder 1.12 (0.87 to 1.43) 0.57 (0.28 to 1.17) 2.37 (1.18 to 4.75)c 1.02 (0.76 to 1.37)
  Substance use disorder 0.90 (0.79 to 1.02) 0.84 (0.59 to 1.19) 0.74 (0.53 to 1.04) 0.96 (0.83 to 1.12)
  Personality disorder 0.91 (0.75 to 1.11) 0.66 (0.34 to 1.27) 0.49 (0.27 to 0.89)c 1.07 (0.86 to 1.34)
Index NCRMD offence (Severe violent as reference), OR (95% CI)
  Other against person 1.89 (1.48 to 2.40)a 2.83 (1.42 to 5.67)b 2.07 (1.30 to 3.27)b 1.72 (1.26 to 2.35)a
  Not against person 2.27 (1.77 to 2.91)a 3.56 (1.74 to 7.26)a 2.39 (1.46 to 3.93)a 2.09 (1.52 to 2.87)a
R2 0.22 0.19 0.14 0.08
Likelihood ratio test 434.2, df = 9, P < 0.001 46.1, df = 7, P < 0.001 70.9, df = 7, P < 0.001 94.8, df = 7, P < 0.001
a

P < 0.001;

b

P < 0.01;

c

P < 0.05

ln = natural logarithm; NCRMD = not criminally responsible on account of mental disorder