Table 1. Differences in smoking abstinence by use of nicotine replacement therapy among smokers who completed the 12- and 26-week posttests.

	Any Use of NRT		Duration of Use of NRT
	Used	Did Not Use	More than 2 weeks	1 to 2 weeks	Did Not Use
12-week posttest
N	922	415	420	502	415
30-day point prevalence abstinence	19.4%	8.0%**	29.1%	11.4%	8.0%**
26-week posttest
N	774	261	408	366	261
30-day point prevalence abstinence	22.0%	18.4%	31.4%	11.5%	18.4%**
Continuous abstinence	8.9%	5.0%*	12.5%	4.9%	5.0%**

^*p<.05;

^**p<.001