Table 6.

Cox regression survival analysis and AUCs of the HCR–20^V3 total score and H-Scale score for all recidivism outcomes.

Sample	n	Recidivism
		Any	Violent	Non-violent
HCR–20V3 total score	54
HR [95% CI]		0.99 [0.91–1.08]	1.01 [0.91–1.14]	1.01 [0.93–1.10]
C-Indexa		.49	.57	.53
AUC at 30 days		.56	.56	.59
AUC at 90 days		.45	.53	.45
AUC at 180 days		.43	.50	.49
AUC at 360 days		.47	.57	.49
AUC at 720 days		.32	.48	.33
IBSa		.20	.18	.20
Brier skill score		0.22	0.45	0.23
Post hoc analyses
HCR–20V3 H-Scale	65
HR [95% CI]		1.05 [0.92–1.19]	1.26* [1.02–1.56]	1.04 [0.90–1.19]
C-Indexa		.57	.65	.56
AUC at 30 days		.63	.77	.58
AUC at 90 days		.62	.83	.62
AUC at 180 days		.58	.63	.59
AUC at 360 days		.57	.63	.56
AUC at 720 days		.48	.64	.48
IBSa		.22	.18	.22
Brier skill score		0.12	0.40	0.12

Note: HCR–20^V3 = Historical, Clinical, Risk Management 20–Version 3. AUC = area under the curve; HR = hazard ratio; CI = confidence interval; IBS = integrated Brier score.

^aBootstrapping validation (with 300 bootstrapped datasets) indicated that bootstrap C-Index and bootstrap IBS values were within 0.06 and 0.05 of reported C-Index and reported IBS values, respectively.

*p < .05.