Table 3. Prediction of general criminal recidivism estimated by stratified Cox-proportional-hazards regression.

Substance abuse intervention variables	Number of participants	Standard Error	Number of convictions	Hazard Ratio (95% CI a )
Residence in dry housing b	35	0.31	7	0.50 (0.15–1.67)
≥ 3 planned visits to an outpatient clinic c	47	0.11	15 d	0.25 (0.11–0.60)

^a 95% CI = 95% Confidence Interval.

^b Compared to no residence in dry housing.

^c Compared to <3 planned visits to an outpatient clinic.

^d Thirteen individuals had re-offended with 15 convictions.