Table 1.

Baseline Demographic Characteristics by Study Group

Characteristic	Control Group (n= 102)	Intervention Group (n= 103)	p Value *
Age, years (range, 19–75) †	37.7 ± 1.2	39.4 ± 1.2	.30
Male gender, %	37	38	.93
White race, %	89	83	.23
Employed, %	50	55	.75
Less than 12th gr. education, %	46	55	.39
Smoking history
Cigarettes per day †	20.8 ± 1.0	19.2 ± 1.0	.29
Pack-years †	27.9 ± 2.3	29.9 ± 2.3	.55
Any prior quit attempt, % responding yes	79	85	.27
Insurance, %
Uninsured	14	13	.79
Federal insurance ‡	55	52
Motivational stage: prepared, %	35	37	.54
Lung function
Predicted FEV1, †%	—	87 ± 2.1(range, 31–141)
FEV:FVC ratio, †%	—	76 ± 0.09(range, 49–93)
CO, † ppb	—	22.4 ± 1.3

^*Two-sided p values based on analysis of variance for age, cigarettes smoked per day, and pack-years, and Pearson's χ²test statistic for all other comparisons.

^†Data are expressed as mean ± SE.

^‡Federal insurance includes Medicare, Medicaid, or Oregon Health Plan.