Table 1.
Demographics and Baseline Characteristics (N = 46)
| Variable | Total | Progesterone n = 24 | Placebo n = 22 | p a |
|---|---|---|---|---|
| Age, mean (SD) | 26.5 (5.2) | 26.2 (5.5) | 26.7 (5.0) | .7403 |
| Non-Hispanic, n (%) | 42 (91) | 21 (88) | 21 (95) | .6093 |
| Race, n (%) | ||||
| White | 28 (62) | 14 (61) | 14 (64) | 1.0000 |
| Black | 12 (27) | 6 (26) | 6 (27) | |
| Native American | 2 (4) | 1 (4) | 1 (5) | |
| >1 race | 3 (7) | 2 (9) | 1 (5) | |
| 1 missing | ||||
| Education, n (%) | .6702 | |||
| Graduate | 1 (2) | 1 (4) | 0 | |
| College graduate or higher | 7 (15) | 2 (8) | 5 (23) | |
| Some college | 30 (65) | 17 (71) | 13 (59) | |
| High school | 6 (13) | 3 (13) | 3 (14) | |
| <High school | 2 (4) | 1 (4) | 1 (5) | |
| Marital status, n (%) | .3785 | |||
| Never married | 30 (65) | 17 (71) | 13 (59) | |
| Married | 9 (20) | 3 (13) | 6 (27) | |
| Divorced | 6 (13) | 4 (17) | 2 (9) | |
| Remarried | 1 (2) | 0 | 1 (5) | |
| Smoker in household, n (%) | 21 (46) | 10 (42) | 11 (50) | .7675 |
| CPD, mean (SD) | 10.1 (4.5) | 10.1 (4.7) | 10.0 (4.4) | .9776 |
| Age regular smoker, mean (SD) | 17.4 (2.6) | 17.7 (2.8) | 17.0 (2.4) | .3472 |
| Quit attempts, mean (SD) | 4.3 (4.8) | 4.1 (3.1) | 4.6 (6.2) | .7101 |
| Longest quit in days, median (IQR) | 180 (30–300) | 120 (21–365) | 195 (90–270) | .6805 |
| Weight concern scale, mean (SD) | 2.7 (1.2) | 2.5 (1.0) | 2.9 (1.4) | .3888 |
| Week 0 Progesterone ng/ml | 0.82 (0.52) | 0.71 (0.40) | 0.97 (0.66) | .1925 |
| # of Pregnancies | 2.11 (1.30) | 2.25 (1.45) | 1.95 (1.13) | .4487 |
| # of Children | 0.67 (0.90) | 0.88 (1.08) | 0.45 (0.60) | .1060 |
CPD = cigarettes per day; IQR = interquartile range.
aTwo group t test or Fisher’s Exact tests