Table 2.
Count and percentage of any exposure (% yes vs no) per montha | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
Gestational Weeks at Delivery (total No.) |
B1 | P1 | P2 | P3 | P4 | P5 | P6 | P7 | P8 | P9 | |
Pre-term | 20–23 (n=515) | 129 (25.0) | 112 (21.7) | 139 (27.0) | 127 (24.7) | 133 (25.8) | 124 (24.1) | ||||
24–27 (n=1,792) | 413 (23.0) | 407 (22.7) | 432 (24.1) | 416 (23.2) | 439 (24.5) | 430 (24.0) | 415 (23.2) | ||||
28–31 (n=3,098) | 790 (25.5) | 789 (25.5) | 815 (26.3) | 806 (26.0) | 816 (26.3) | 792 (25.6) | 764 (24.7) | 772 (24.9) | |||
32–36 (n=22,508) | 5850 (26.0) | 5900 (26.2) | 5937 (26.4) | 5911 (26.3) | 5966 (26.5) | 5976 (26.6) | 5871 (26.1) | 5921 (26.3) | 5782 (25.7) | ||
Term | 37–42 (n=197,461) | 55136 (27.9) | 55507 (28.1) | 55770 (28.2) | 56019 (28.4) | 55834 (28.3) | 56029 (28.4) | 56079 (28.4) | 56000 (28.4) | 55662 (28.2) | 54960 (27.8) |
B1=month before conception, P1–P9=each successive month from first to ninth month of pregnancy,