Baseline characteristics of randomly assigned women
| Characteristic . | Anticoagulant group, n = 147 . | Intensive surveillance group, n = 147 . |
|---|---|---|
| Age, y, median (interquartile range) | 31 (26-36) | 32 (27-36) |
| No. with at least 1 previous live birth (%) | 67 (45.6) | 66 (44.9) |
| No. of previous losses, median (interquartile range) | 2 (2-3) | 2 (2-3) |
| No. with more than 2 previous losses (%) | 66 (44.9) | 60 (40.8) |
| BMI, kg/m2, median (interquartile range) | 25.4 (21.8-29.0) | 26.4 (23.1-32.4) |
| Current smoker, n (%) | 29 (19.7) | 25 (17.0) |
| Gestation at random assignment, wk, median (interquartile range) | 6 (6-7) | 6 (6-6) |
| Presence of multiple pregnancy, n (%) | 2 (1.4) | 3 (2.0) |
| Characteristic . | Anticoagulant group, n = 147 . | Intensive surveillance group, n = 147 . |
|---|---|---|
| Age, y, median (interquartile range) | 31 (26-36) | 32 (27-36) |
| No. with at least 1 previous live birth (%) | 67 (45.6) | 66 (44.9) |
| No. of previous losses, median (interquartile range) | 2 (2-3) | 2 (2-3) |
| No. with more than 2 previous losses (%) | 66 (44.9) | 60 (40.8) |
| BMI, kg/m2, median (interquartile range) | 25.4 (21.8-29.0) | 26.4 (23.1-32.4) |
| Current smoker, n (%) | 29 (19.7) | 25 (17.0) |
| Gestation at random assignment, wk, median (interquartile range) | 6 (6-7) | 6 (6-6) |
| Presence of multiple pregnancy, n (%) | 2 (1.4) | 3 (2.0) |
BMI indicates body mass index.