TABLE 3.

—Registration in Programs and 12- and 24-Month Smoking Cessation Rates, by Program Format and Incenctive Condition

Program Type	n	Least Squares Mean	SE	df	F	P
Registration in cessation programsa
Phone counseling	786	0.169	0.0279
Group	795	0.200	0.0278
Choice	821	0.150	0.0279	2, 20	0.84	.4466
Incentives
Yes	1264	0.222	0.0226
No	1138	0.119	0.0227	1, 20	9.71	.0054
Cessation reported on the 12-mo surveyb
Phone counseling	616	0.166	0.0146
Group	637	0.115	0.0141
Choice	611	0.160	0.0143	2, 20	3.60	.0463
Incentives
Yes	965	0.145	0.0114
No	899	0.148	0.0118	1, 20	0.02	.9029
Cessation reported on the 24-mo surveyc
Phone counseling	603	0.203	0.0156
Group	618	0.155	0.0153
Choice	602	0.189	0.0155	2, 20	2.85	.0812
Incentives
Yes	951	0.189	0.0124
No	872	0.176	0.0130	1, 20	0.69	.4146

^aAnalysis adjusted for gender, occupation, education, marital status, stage of change, ethnicity, and self-efficacy.

^bAnalysis adjusted for occupation, stage of change, education, self-efficacy, and level of addiction.

^cAnalysis adjusted for stage of change, level of addiction, and self-efficacy.