Table 1.

Probability of Adverse Events by Candidate Predictors Among Pregnant Smokers

Characteristic	N	% Adverse Events	p-valuea
Randomization
CBT	52	17%	0.06
NRT+CBT	105	31%
Age
Less than or equal to 25	78	23%	0.07
Greater than 25	79	30%
Race
African American	38	44%	0.004
Non-African American	119	21%
Education
Less than High School	45	22%	0.05
High School or greater	112	37%
Employment
Employed	74	25%	0.78
Unemployed	83	27%
Partnered
No Partner	50	30%	0.53
Partner	107	25%
Obstetric History
1st pregnancy	24	16%
Healthy pregnancy history	99	20%
Adverse pregnancy history	34	52%	<0.001
History of Depression
Yes	43	30%	0.55
No	114	25%
History of Anxiety Disorder
Yes	19	42%	0.11
No	138	24%
History of Drug or Alcohol Use
Yes	35	31%	0.48
No	122	25%
History of Sexually Transmitted Infection
Yes	38	25%	0.44
No	119	31%
Adequate prenatal care index
Index of 1 or 2	38	18%	0.06
Index of 3 or 4	119	29%
Baseline # cigs/day
Less than or equal to 9	67	28%	0.82
Greater than 9	90	26%
Baseline CESD/depression score (median)
Less than or equal to 13	75	27%	0.68
Greater than 13	82	27%
Baseline self-esteem
Less than or equal to 5	88	27%	0.58
Greater than 5	69	26%
Baseline stress
<=15	76	24%	0.42
>15	81	30%
Baseline Coping
<=20	75	27%	0.83
>20	82	27%
Analgesic medication use during pregnancy
Yes	38	36%	0.11
No	119	23%
Psychiatric medication use during pregnancy
Yes	32	31%	0.52
No	125	25%

CBT = cognitive– behavioral therapy, NRT = nicotine replacement therapy, CESD = Center for Epidemiologic Studies Depression Scale

^aP-values are from Wald tests in logistic regression models containing only one predictor. Continuous predictors were analyzed as continuous variables but are dichotomized in this Table for the purposes of presentation.