Table 1.

Group Demographics.

Variable	AC Group	YC Group
Number/Group	35	33
Mean Age (Range)	38 (21–58)	40 (18–61)
Sex	26 Female, 9 Male	25 Female, 8 Male
Self-Identified Race	33 White, 2 Black	31 White, 2 Biracial
% Currently Married	54	64
% Reporting Employment Outside the Home	71	42
% Graduated High School or Having GED	94	88
% Reporting Household Income > $21,000/year	60	48
Mean Number of Cigarettes Smoked Per Day at Intake (Range)	30 (12–60)	30 (13–60)
Mean CO at Intake	26.4 (10–59)	23.9 (8–60)
Mean Years Smoking at Intake (Range)	21 (5–43)	22 (4–41)
Mean Fagerstrom at Intake (Range)	5 (3–8)	5 (2–8)

Abbreviations: AC:Abstinence Contingent;YC: Yoked Control;GED: General Equivalency Degree