Table 1. Frequencies (at the initial consultation) according to abstinence.

	Failure (n = 630)	Success (n = 737)	p value	Chi_square
Sex (male)	50.2%	46.4%	0.15	2.1
Current state of anxiety at baseline	46.8%	29.3%	<0.0001	45.2
Previous attempt	76.5%	83.4%	0.0008	11.2
Other psychoactive substances	40%	18.7%	<0.0001	73.8
Heart, lung and Ear-Nose-Throatdiseases	57.8%	44.2%	<0.0001	25