Table 3 Patient Characteristics
Characteristic | Progesterone n = 19 | Placebo n = 22 |
|---|---|---|
Mean Maternal age (years) | 26.5 (SD 3.9) Range 20–34 | 29.1 (SD 5.9) Range 19 to 39 |
Mean Gestational age at randomization (weeks and days) | 29+0 (SD 2+2) Range 24+2 to 32+5 | 28+4 (SD 2+5) Range 23+1 to 32+3 |
Gravidity | ||
1 | 4 (21.1%) | 7 (31.8%) |
2 | 9 (47.4%) | 7 (31.8%) |
3 or more | 6 (31.6%) | 8 (36.4%) |
Parity | ||
0 | 6 (31.6%) | 10 (45.5%) |
1 | 8 (42.1%) | 7 (31.8%) |
2 or more | 5 (26.3%) | 5 (22.7%) |
Number of previous PTB <37 weeks | ||
0 | 10 (58.8%) | 16 (72.7%) |
1 | 5 (29.4%) | 3 (13.6%) |
2 | 2 (11.8%) | 3 (13.6%) |
Unknown | 2 | 0 |
Conception (this pregnancy) | ||
Spontaneous | 14 (93.3%) | 17 (81.0%) |
Ovulation induction alone | 1 (6.7%) | 3 (14.3%) |
IVF | 0 (0.0%) | 1 (4.8%) |
Unknown | 4 | 1 |
Multiple reduction (before randomization) | ||
No | 16 (100%) | 22 (100%) |
Unknown | 3 | 0 |
Pregnancy complications (this pregnancy, before or at time of randomization) | ||
None | 3 (17.6%) | 10 (47.6%) |
Diabetes | 1 (5.9%) | 0 (0.0%) |
Uterine abnormality | 0 (0.0%) | 1 (4.8%) |
Previous AP bleed | 5 (29.4%) | 3 (14.3%) |
Recreational drugs | 0 (0.0%) | 1 (4.8%) |
Smoker | 6 (35.3%) | 4 (19.0%) |
Othera | 7 (41.2%) | 5 (23.8%) |
Unknown | 2 | 1 |