translate English to French: The latter, showing that those who used cocaine on a regular basis before treatment were more likely to relapse or discontinue treatment, is supported by a recent study comparing people who had or had not participated in self-help programs prior to seeking treatment.
On a des preuves que ces groupes sont particulièrement résistants au traitement (Leal, Ziedonis et Kostien, 1994). Signalons aussi qu’un grand nombre de gens interrompent le traitement ou bien continuent de consommer durant le traitement (Agosti, Nunes et Ocepeck-Welikson, 1996).