Table 2.

Prediction of treatment abstinence rates after 12 months, ITT sample (N = 359).

	Odds ratio	Std. Err	z	p	95% CI
Continuous abstinence according to Russell standard
t	0.847	0.026	−5.46	<0.001	0.798–0.899
t 2	1.007	0.002	3.67	<0.001	1.003–1.011
Treatment condition	0.733	0.149	−1.53	0.126	0.493–1.091
Seven-day point prevalence abstinence
t	0.915	0.028	−2.89	0.004	0.861–0.972
t 2	1.003	0.002	1.27	0.204	0.998–1.007
Treatment condition	0.760	0.146	−1.43	0.152	0.521–1.107

t, time variable; t², squared time variable; Treatment condition (0 = HT, 1 = CBT); CI, confidence interval.