Table 1

Demographic, pregnancy, and smoking history information at first prenatal visit1-150

Experimental
(n=88)
Control
(n=85)
Demographics
 Age (years) (mean (SD))25.8 (5.5)26.6 (5.7)
 Education (years) (mean (SD))12.5 (2)12.5 (2.1)
 Race (white) (n (%))76/87 (87.4)69/85 (81.2)
 Ethnicity (non-Hispanic) (n (%))81/86 (92)78/85 (91.8)
Pregnancy history
 Weeks pregnant (gestational week) (mean (SD))18.1 (8.4)16 (7.5)
 Primigravida (n (%))30/63 (47.6)23/61 (37.7)
 Prior births (mean (SD))0.7 (1.0)0.9 (0.8)
Smoking information
 Age started (years) (mean (SD))15.1 (3.5)15.7 (3.4)
 Cigs smoked/day prepregnancy (mean (SD))20.3 (11)18.7 (9.6)
 Cigs smoked/day during past week (mean (SD))12.9 (12.2)11.8 (14)
 Cotinine concentration (ng/ml) (mean (SD))2701.8 (3459.3)2597 (2899.5)
 Number of prior quit attempts (mean (SD))1.7 (0.5)1.6 (0.5)
 Number of other smokers in household (mean (SD))1.0 (1.2)1.1 (1.9)
 Planning to quit within next 30 days (n (%))55/66 (83.3)45/59 (76.3)
 Thinking about quitting during pregnancy (n (%))58/73 (79.5)55/69 (79.7)
  • 1-150 No significant differences were found between conditions at baseline.