Table 1.
Participant Baseline Characteristics
| Overall | Overweight/obese (N = 161) | Normal/underweight (N = 209) | p value | |
|---|---|---|---|---|
| Demographics | ||||
| Age (years) | 24.6 (5.2) | 25.1 (5.2) | 24.2 (5.3) | .13 |
| % Caucasian | 95 | 97 | 94 | .16 |
| Education | .89 | |||
| % > 12 years of education | 30 | 30 | 30 | |
| % = 12 years of education | 47 | 48 | 46 | |
| % < 12 years of education | 23 | 22 | 24 | |
| Weeks pregnant at baseline | 10.3 (4.6) | 10.5 (5.4) | 10.1 (4.0) | .46 |
| % First pregnancy | 61 | 59 | 63 | .44 |
| % Married | 26 | 27 | 25 | .59 |
| % With private insurance | 31 | 32 | 30 | .68 |
| % Working outside of home | 57 | 57 | 56 | .89 |
| Smoking characteristics | ||||
| Age first started smoking | 15.2 (3.1) | 15.2 (3.3) | 15.3 (2.9) | .93 |
| Cigarettes per day prepregnancy | 16.6 (9.5) | 17.1 (10.0) | 16.2 (9.1) | .37 |
| % Living with another smoker | 75 | 75 | 74 | .83 |
| % With no smoking allowed in home | 55 | 52 | 58 | .27 |
| % With none or few friends or family who smoke | 29 | 25 | 32 | .15 |
| % Attempted to quit prepregnancy | 70 | 70 | 71 | .72 |
| Number of quit attempts during pregnancy | 1.0 (1.9) | 0.9 (1.5) | 1.1 (2.2) | .20 |
| Nicotine withdrawal questionnaire total score | 1.5 (0.8) | 1.5 (0.8) | 1.5 (0.8) | .80 |
| Psychiatric symptoms | ||||
| Stress rating | 5.3 (2.6) | 5.4 (2.6) | 5.3 (2.5) | .71 |
| Beck Depression Inventory | 10.1 (6.8) | 10.4 (6.8) | 10.0 (6.8) | .60 |
| % History of depressive symptoms | 35 | 35 | 34 | .85 |
Note. Values represent means (SD) unless otherwise indicated. p values correspond to t tests for comparisons of means and chi-square tests for comparisons of proportions (percents).