. Author manuscript; available in PMC: 2012 Jan 1.

Published in final edited form as: Addict Behav. 2010 Sep 24;36(1-2):144–147. doi: 10.1016/j.addbeh.2010.08.024

Table 1.

Univariate Analysis of Predictors of Abstinence at Week 15 (Top) and Week 27 (Bottom)

	Week 15
Predictor	Smokers M (SD)	Quitter M (SD)	F	p
Change in Withdrawal (df = 1, 290)	59.5 (21.3)	59.3 (21.8)	.003	.96
Change in Craving (df = 1, 299)	48.8 (21.1)	47.7 (16.4)	.229	.63
Change in Perceived Control (df = 1, 298)	15.8 (5.0)	17.7 (4.4)	12.39	< .01
Change in Self-efficacy (df = 1, 293)	50.9 (14.9)	55.7 (14.4)	6.64	.01

	Week 27
Predictor	Smokers M (SD)	Quitter M (SD)	F	p
Change in Withdrawal (df = 1, 290)	59.3 (21.5)	59.9 (21.3)	.037	.85
Change in Craving (df = 1, 299)	48.3 (20.9)	49.3 (14.2)	.116	.73
Change in Perceived Control (df = 1, 298)	15.9 (5.2)	17.4 (3.7)	4.43	.04
Change in Self-efficacy (df = 1, 293)	51.2 (14.9)	57.3 (14.1)	7.95	.01

Note. M = mean; SD = Standard Deviation; p = probability; df = degrees of freedom.