Table 2.

Parametric terms of semi-parametric additive hazards model

	Multiple regression model 2
Variable	Hazard ratio (95% CI)	p-value
OMT	(See Figure 3)	<0.001
Female gender	-0.0088 (-0.0142, -0.0034)	0.001
Age [10 years]	-0.0006 (-0.0010, -0.0003)	<0.001
>27 criminal days prior to OMT application	0.0463 (0.0284, 0.0641)	<0.001
Criminal conviction while on waiting list	(See Figure 3)	<0.001
>1 OMT period	0.0212 (0.0080, 0.0343)	0.001
Criminal conviction last 30 days	(See Figure 3)	<0.001

Effect estimates for parametric terms of a semi-parametric additive hazards regression model with day of criminal conviction as a recurrent event outcome and opoid maintenance treatment (OMT) a time-dependent explanatory variable. Time-varying covariate effects are shown in Figure 3.