Table 1.

Demographic and Smoking Characteristics at Early Pregnancy Assessment (N = 47)

Demographics:
Age (years)	24.4 ± 5.4
Education (years)	12.2 ± 1.5
% Caucasian	91
% married	26
% private insurance	17
% work for pay	53
% primigravida	64
Smoking characteristics:
Age started smoking (years)	15.1 ± 3.3
% attempted to quit before learning of pregnancy	77
Cigarettes per day pre-pregnancy	19.3 ± 8.8
Cigarettes per day	10.3 ± 7.2
Minnesota Nicotine Withdrawal Scale score	1.4 ± 0.7
% living with other smoker(s)	76
% with none or few friends and/or family who smoke	24
% with no smoking allowed in home	57

Values represent mean ± SD, unless otherwise specified.