Table 1.

Baseline Sociodemographic and Smoking-related Variables by Treatment Group (n=129)

Characteristics	Control N (%)	Intervention N (%)	p-value
Births: none vs births at >20 weeks gestation	29/64 (45.3)	33/65 (50.8)	0.48
Years of education (mean/SD)	11.6 ± 2.2	11.9 ± 2.2	0.38
Gestational age (weeks) at first visit (mean/SD)	11.6 ± 6.3	12.6 ± 7.0	0.37
Caucasian race vs other	62/64 (96.9)	62/65 (95.4)	0.56
Private insurance vs Medicaid and uninsured	7/64 (10.9)	8/65 (12.3)	0.81
Married vs other	9/64 (14.1)	14/65 (21.5)	0.45
Depressed mood past montha	9/64 (14.1)	8/65 (12.3)	0.80
Perceived Stress Scoreb (mean/SD)	9.62 ± 3.4	9.42 ± 2.7	0.71
Support to quit from othersd	51/64 (79.7)	50/65 (76.9)	0.83
Cigarettes/day before pregnant (mean/SD)	15.8 ± 7.5	17.2 ± 9.5	0.38
Cigarettes/day in past 7 days (mean/SD)	6.58 ± 5.8	7.68 ± 10.8	0.47
Readiness to quit
Seriously thinking of quitting smoking during this Pregnancye	63/64 (98.4)	64/65 (98.5)	0.37
Plan to quit in the next 30 daysf	61/64 (95.3)	62/65 (95.3)	0.98
Confidence can quitc	29/63 (46)	28/65 (43.1)	0.67

^aHow much of the time, during the past month, have you felt downhearted and blue? (scoring: a lot, all the time, or a lot vs some or never).

^bPerceived Stress Scale (scoring: sum of four items range 4–20, scoring - high scores less stress).

^cIf you decided to quit smoking during the next month, how confident are you that you could do it? (very vs somewhat, not very, or not at all).

^dIf you tried to quit smoking, how much support or understanding do you think you would get from family, friends, and coworkers? (scoring; a lot vs some, not much, or none).

^eAre you seriously thinking about quitting smoking completely during this pregnancy (yes vs no).

^fAre you planning to quit smoking completely within the next 30 days (yes vs no).