Table 1.

Baseline characteristics of study participants

		Original Program	Modified Program	P
Number of participants		5966	6003
Age (mean, SD)		34.1	33.8	.13
Men (n, %)		2308 (39.0)	2181 (38.2)
Smoking status				.73
	Current smokers (n, %)	4346 (73.9)	4336 (73.6)
	Former smokers (n, %)	1538 (26.1)	1557 (26.4)
Among current smokers
	Cigarettes per day (mean)	19.6	19.3	.06
	Minutes to first cigarette of the day (mean)	50.5	51.3	.64
	Made a quit attempt in the previous year (n, %)	2079 (47.9)	2104 (49.4)	.15
Stage of change (n, %)				.13
	Precontemplation	214 (4.9)	171 (4.0)
	Contemplation	1497 (34.5)	1480 (34.9)
	Preparation	2623 (60.5)	2584 (61.0)
Among former smokers
	Interval since quit date (days, mean)	101	91	.73
Stage of change				.06
	Action (n, %)	1349 (93.7)	1082 (91.9)
	Maintenance (n, %)	90 (6.3)	96 (8.1)