**Appendix A**

**Table A1.** Baseline sociodemographic and clinical information routinely collected by survey in outpatient drug dependence care centres in Barcelona.



**TableA1.***Cont.* **Table A1.** *Cont.*


**Table A2.** Assessment of the proportional hazards assumption of the final Cox regression model (model 4).


\*, indicates that the Cox proportional hazard assumption (*p*-Value > 0.05) was observed.
