4 90 CHAPTER 4 Table 4.2: Sample comparison on demographic and risk-relevant variables for subsample used for recidivism analyses (van den Berg et al., 2022, p.427) DSP-Recidivism (N = 611) BC-Recidivism (N = 3,863) ES [95% CI] M(SD) N/% (n/N) M(SD) N/% (n/N) Demographic Variables Age at Release 41.13 (13.68) 610 41.00 (13.73) 3863 d = 0.009, 95% CI [-0.076, 0.949] Indigenous Status 14.7% (89/606) 22.1% (827/3737) OR = 0.606, 95% CI [0.478, 0.768] Never lived with lover > 2 yrs 33.1% (202/610) 34.9% (1333/3815) OR = 0.922, 95% CI [0.769, 1.105] Follow-up Time 88.31 (26.42) 611 56.06 (29.79) 3863 d = 1.099, 95% CI [1.010, 1.187] Risk Scores Static-99R 2.36 (2.45) 610 2.39 (2.51) 3815 d = -0.012, 95% CI [-0.098, 0.073] STABLE-2007 7.42 (5.05) 611 7.55 (4.86) 3863 d = -0.027, 95% CI [-.112, 0.056] Prior Criminal History Prior sentence dates 25.4% (155/610) 33.2% (1268/3816) OR= 0.864, 95% CI [0.564, 0.831] Prior non-sexual violence 27.0% (165/610) 32.1% (1226/3816) OR = 0.783, 95% CI [0.647, 0.948] Prior sex conviction 30.8% (188/610) 27.3% (1041/3816) OR = 1.188, 95% CI [0.986, 1.430] Sexual Index Characteristics Male victim 15.4% (94/610) 11.6% (444/3816) OR = 1.384, 95% CI [1.087, 1.761] Stranger victim 23.0% (140/610) 26.4% (1009/3816) OR = 0.829, 95% CI [0.677, 1.014] Unrelated victim 71.3% (435/610) 64.5% (2462/3816) OR = 1.367, 95% CI [1.133, 1.649] Index Non-sexual Violence 10.3% (63/610) 14.0% (534/3816) OR = 0.708, 95% CI [0.537, 0.933] Note. Prior criminal history, sexual index characteristics items, and “never lived with a lover for more than two years” were taken from the STATIC-99R. The Cohen’s d (d) and odds ratio (OR) indicates the extent to which variables in the original and replication study differ. When the value of 1,000 is not in the 95% confidence interval, it is 95% certain that the variables differ (This statistically significant differences, p < .05, are bold indicated.) A commonly used interpretation of Cohen’s d is to refer to effect sizes as small (d = 0.2), medium (d = 0.5), and large (d = 0.8; Cohen, 1988). Similar to this classification, OR of 1.68/0.60, 3.47/0.29, and 6.71/0.15 can be interpreted as small, medium, and large, respectively (Chen et al., 2010). DSP = dynamic supervision project; BC = British Columbia; CI = confidence interval.
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