Table 6.

Logistic regression predicting 3-month follow-up response (n=21,385).

Variable		B	SE	Wald	df	P	OR	95% CI
Sex (male)		–0.16	0.07	5.66	1	.02	0.85	0.75-0.97
Age (years)
	≤31	Ref		25.97	3	<.001
	32-39	0.24	0.10	6.21	1	.01	1.27	1.05-1.54
	40-47	0.42	0.10	19.09	1	<.001	1.52	1.26-1.83
	≥48	0.45	0.10	20.65	1	<.001	1.57	1.29-1.91
Nationality (Spanish)		0.99	0.20	24.07	1	<.001	2.70	1.82-4.01
Education
	Primary	Ref		46.59	2	<.001
	Secondary	0.31	0.13	6.10	1	.01	1.36	1.07-1.74
	University	0.67	0.12	30.51	1	<.001	1.96	1.54-2.48
Cigarettes per day
	≤15	Ref		16.91	2	<.001
	16-20	0.35	0.09	16.55	1	<.001	1.43	1.20-1.69
	≥21	0.19	0.09	4.37	1	.04	1.20	1.01-1.43
Expectation of success
	Not at all	Ref		25.44	3	<.001
	Some	0.37	0.21	3.01	1	.08	1.44	0.95-2.18
	Pretty much	0.65	0.21	9.57	1	<.001	1.91	1.27-2.88
	Complete	0.69	0.22	10.23	1	<.001	1.99	1.31-3.04
Version of the program (noninteractive)		0.58	0.07	73.91	1	<.001	1.78	1.56-2.03
Constant		–5.69	0.32	308.90	1	<.001	0.00