Figure 1From: Accounting for individual differences and timing of events: estimating the effect of treatment on criminal convictions in heroin users Day-by-day mean number of criminal convictions. Day-by-day number of criminal convictions (crime days) per people at risk (grey dots), with cubic smoothing spline superimposed (black lines), for a cohort of 3221 Norwegian heroin users when in opioid maintenance treatment (OMT) and not.Back to article page