Table 1.
Baseline Characteristics of Participants
| Variable | Overall (n=41) | Progesterone (n=22) | Placebo (n=19) |
|---|---|---|---|
| N (%) | N (%) | N (%) | |
| Age | |||
| >25 years | 19 (46.3) | 9 (40.9) | 10 (52.6) |
| ≤25 years | 22 (53.7) | 13 (59.1) | 9 (47.4) |
| Race/Ethnicity | |||
| Hispanic | 15 (36.6) | 11 (50.0) | 4 (21.1) |
| Black, non-Latino | 22 (53.7) | 9 (40.9) | 13 (68.4) |
| White, non-Latino | 3 (7.3) | 2 (9.1) | 1 (5.3) |
| Multi-racial | 1 (2.4) | 0 (0.0) | 1 (5.3) |
| Education | |||
| < High school degree | 9 (22.0) | 6 (27.3) | 3 (15.8) |
| High school degree | 22 (53.7) | 13 (59.1) | 9 (47.4) |
| Some college (no degree) | 10 (24.4) | 3 (13.6) | 7 (36.8) |
| Lives with spouse or partner | |||
| Yes | 20 (48.8) | 10 (45.5) | 10 (52.6) |
| No | 21 (51.2) | 12 (54.6) | 9 (47.4) |
| Parity | |||
| 1 | 11 (26.8) | 8 (36.4) | 3 (15.8) |
| 2 | 12 (29.3) | 4 (18.2) | 8 (42.1) |
| 3 | 11 (26.8) | 7 (31.8) | 4 (21.1) |
| 4+ | 7 (17.1) | 3 (13.6) | 4 (21.1) |
| Pre-quit smoking level | |||
| ≤10 cigarettes/day | 34 (82.9) | 17 (77.3) | 17 (89.5) |
| >10 cigarettes/day | 7 (17.1) | 5 (22.7) | 2 (10.5) |
| Lives with smoker | |||
| Yes | 18 (51.4) | 10 (47.6) | 8 (50.0) |
| No | 19 (48.6) | 11 (52.4) | 8 (50.0) |
| Missing | 4 | 1 | 3 |
| Breastfeeding intentions | |||
| Breastfeed exclusively | 13 (31.7) | 9 (40.9) | 4 (21.1) |
| Breastfeed and formula feed | 21 (51.2) | 11 (50.0) | 10 (52.6) |
| Formula feed exclusively | 6 (14.6) | 2 (9.1) | 4 (21.1) |
| Unsure | 1 (2.4) | 0 (0.0) | 1 (5.3) |
| Feeding method at week 2 visit | |||
| Breastfeed exclusively | 6 (14.6) | 6 (27.3) | 0 (0.0) |
| Breastfeed and formula feed | 8 (19.5) | 5 (22.7) | 3 (15.8) |
| Formula feed exclusively | 21 (51.2) | 7 (31.8) | 14 (73.7) |
| Missing | 6 (14.6) | 4 (18.2) | 2 (10.5) |
| Fagerstrom Test for Nicotine Dependence | |||
| Low dependence | 13 (31.7) | 7 (31.8) | 6 (31.6) |
| Low to moderate dependence | 20 (48.8) | 11 (50.0) | 9 (47.4) |
| Moderate dependence | 8 (19.5) | 4 (18.2) | 4 (21.1) |
| High dependence | 0 (0.0) | 0 (0.0) | 0 (0.0) |
|
| |||
| Mean (SD) | Mean (SD) | Mean (SD) | |
|
| |||
| Baseline number of cigarettes per day | 6.6 (3.9) | 6.2 (4.3) | 7.1 (3.3) |
| Edinburgh Postnatal (EPDS) Depression Scale* | 3.4 (4.7) | 3.0 (4.5) | 3.8 (4.9) |
| Brief Questionnaire of (QSU-brief) Smoking Urges** | 16.9 (13.7) | 18.0 (12.2) | 15.6 (15.4) |
*
Scale is scored from 0 to 30. Higher scores indicate more severe symptoms.
**
Scale is scored from 10 to 70. Higher scores indicate more severe symptoms.