Table 3.

Fixed Effects Estimates for the Prediction of Post-Cessation Nicotine Withdrawal, Craving and Negative Affect

Nicotine Withdrawal							Craving			Negative Affect

Fixed Effect	Estimate	SE	T-ratio	Sig.	Estimate	SE	T-ratio	Sig.	Estimate	SE	T-ratio	Sig.
Intercept	14.503	0.488	29.724	<0.001	79.306	4.832	16.411	<0.001	18.694	0.428	43.649	<0.001
Gender	0.817	0.504	1.621	0.107	7.070	4.917	1.438	0.153	−0.840	0.442	−1.900	0.060
Axis I	−0.401	0.572	−0.701	0.484	6.640	4.697	1.414	0.160	−0.033	0.463	−0.072	0.943
FTND	0.342	0.130	2.635	0.009	1.805	1.298	1.391	0.167	−0.158	0.096	−1.645	0.102
Pre-Score	0.767	0.067	11.429	<0.001	0.434	0.083	5.246	<0.001	0.828	0.051	16.198	<0.001
ΔAIS	−0.102	0.026	−3.979	<0.001	−0.842	0.202	−4.171	<0.001	−0.058	0.021	−2.772	0.006
Time	0.129	0.043	2.992	0.003	−0.578	0.315	−1.832	0.068	−0.030	0.042	−0.717	0.474
Time x ΔAIS	0.008	0.004	2.200	0.029	0.042	0.033	1.295	0.196	0.004	0.003	1.391	0.165
Time²	−0.005	0.001	−3.268	0.001	0.020	0.011	1.881	0.061	0.001	0.001	0.106	0.915
Time² x ΔAIS	0.001	0.001	−1.529	0.127	−0.001	0.001	−1.247	0.213	0.001	0.001	−1.167	0.244

Note: SE = Standard Error; Gender [coded 0=male, 1=female]; Axis I = Presence of Axis I psychopathology in past year [coded 0=no, 1=yes]; FTND = Fagerström Test of Nicotine Dependence; Pre-score = mean pre-quit score of the respective post-quit outcome variable; ΔAIS = change in Avoidance and Inflexibility Scale (difference score of baseline value – quit day value); Time [linear time; coded day 0=quit day, day 7=week one post-quit, day 14=week two post-quit, day 21=week four post-quit]; Time² [Time x Time].