Baseline variables by intention to quit within 30 days
| Low intention of quitting within 30 days (n=491) | High intention of quitting within 30 days (n=881) | Total (n=1372) | |
| Demographics | |||
| Mean (SD) age (years) | 25.3 (6.5) | 25.8 (6.5) | 25.6 (6.5) NS |
| Mean (SD) education (years) | 11.5 (1.9) | 12.1 (1.9) | 11.9 (2.0)1-160 |
| Race (%) | |||
| White | 80.2 | 71.7 | 74.81-160 |
| African American | 10.6 | 12.6 | 11.9 |
| Hispanic | 4.5 | 9.4 | 7.7 |
| Other | 4.7 | 6.3 | 5.6 |
| Parity (%primipara) | 35.7 | 43.9 | 42.11-150 |
| Insurance status (% private) | 26.5 | 48.8 | 40.61-160 |
| Weeks pregnant at baseline (% first trimester) | 53.5 | 62.4 | 59.21-160 |
| Smoking history | |||
| Prepregnancy cigs/day (mean) (SD) | 21.8 (11.1) | 17.6 (9.3) | 19.1 (10.2) 1-160 |
| Baseline (past 7 days) cigs/day (mean) (SD) | 12.8 (9.0) | 7.7 (7.3) | 9.5 (8.4) 1-160 |
| Minutes to 1st cig (prepregnancy) (% < 30 minutes) | 72.4 | 58.7 | 63.61-160 |
| Minutes to 1st cig (baseline) (% < 30 minutes) | 53.4 | 32.4 | 40.01-160 |
| Prepregnancy quit attempts (mean) (SD) | 1.7 (5.4) | 2.4 (6.8) | 2.1 (6.3)1-160 |
| Pregnancy quit attempts (% 1+) | 32.2 | 61.3 | 50.91-150 |
| Age began smoking (mean) (SD) | 14.7 (5.0) | 15.6 (3.6) | 15.3 (4.2)1-160 |
| Beliefs, attitudes | |||
| Want to stop smoking | |||
| Mean (SD) | 3.0 (0.88) | 3.8 (0.49) | 3.5 (0.75)1-160 |
| “A lot” (%) | 33.7 | 81.3 | 64.2 |
| Want to keep smoking | |||
| Mean (SD) | 2.3 (0.90) | 1.7 (0.83) | 1.9 (0.91)1-160 |
| “A lot” (%) | 9.6 | 4.0 | 6.0 |
| Smoking harms unborn child | |||
| Mean (SD) | 3.3 (0.78) | 3.6 (0.67) | 3.5 (0.72)1-160 |
| “A lot” (%) | 47.6 | 71.0 | 62.3 |
| Smoking harms mothers' health | |||
| Mean (SD) | 3.5 (0.66) | 3.8 (0.52) | 3.7 (0.58)1-160 |
| “A lot” (%) | 61.9 | 80.7 | 74.0 |
| Confidence in ability to quit in next 30 days | |||
| Mean (SD) | 2.4 (0.97) | 3.1 (0.88) | 2.7 (1.0)1-160 |
| “Very” (%) | 9.5 | 32.7 | 24.6 |
| Network/support | |||
| Number of friends and family who smoke | |||
| Mean (SD) | 3.3 (0.83) | 3.0 (0.95) | 3.1 (0.92)1-160 |
| “Most” (%) | 50.3 | 42.3 | 45.2 |
| Number of household smokers | |||
| Mean (SD) | 1.2 (1.4) | 1.1 (1.4) | 1.2 (1.4) NS |
| “1+ smoker” (%) | 70.9 | 67.8 | 68.9 |
| Anticipated support in quitting | |||
| Mean (SD) | 3.2 (0.97) | 3.6 (0.79) | 3.4 (0.88)1-160 |
| “A lot” (%) | 54.0 | 72.6 | 66.0 |
| Mental health | |||
| Lifetime feeling of depression (“yes” (%)) | 43.5 | 35.3 | 35.1 |
| Past month felt down and blue | |||
| Mean (SD) | 2.3 (0.82) | 2.2 (0.78) | 2.2 (0.79) NS |
| “All” (%) | 10.2 | 7.4 | 8.4 |