Figure 3.

Kaplan-Meier survival estimates relapses, by sample. The abscissa represents follow-up duration in days. Each step is a relapse. Data are censored if relapse does not occur. There is no difference between the two samples in a Cox regression test when adjusted.

Malet et al. Substance Abuse Treatment, Prevention, and Policy 2006 1:18   doi:10.1186/1747-597X-1-18
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