| PLO | Control | P value |
---|---|---|---|
No. of subjects | 56 | 500 | Â |
No. of deliveries | 65 | 581 | Â |
1, n (%) | 47 (83.9) | 424 (84.8) | 0.845 |
2, n (%) | 9 (16.1) | 71 (14.2) | 0.689 |
3, n (%) | 0 | 5 (1.0) | 1 |
Maternal age (years), mean (SD) | 34.1 (5.2) | 32.3 (4.8) | 0.0082* |
Maternal age (years), range | 21.0–43.1 | 18.3–45.1 |  |