Time elapsed from index pregnancy |
3.2 ±0.9 |
3.2±0.9 |
3.2±0.9 |
0.393 |
Maternal Age >= 35 |
378 (9.4) |
142 (10.7) |
236 (9.0) |
0.047 |
Race (Non-Hispanic Black) |
495 (12.3) |
181 (13.6) |
314 (11.7) |
0.071 |
Education (Some college or less) |
1506 (37.4) |
568 (42.8) |
938 (34.8) |
<0.001 |
Gravidity >= 3 |
248 (6.2) |
94 (7.1) |
154 (5.7) |
0.089 |
Smoking |
625 (15.6) |
235 (17.7) |
390 (14.5) |
0.008 |
Alcohol Use (ever) |
2509 (62.4) |
800 (60.3) |
1709 (63.4) |
0.054 |
Prior Miscarriage |
599 (14.9) |
222 (16.7) |
377 (14.0) |
0.021 |
Prior Abdominal Surgery |
408 (10.1) |
149 (11.2) |
259 (9.6) |
0.110 |
Prior Bleeding at First Trimester |
272 (6.8) |
108 (8.1) |
164 (6.1) |
0.015 |
≤ 200% of federal poverty level |
1013 (30.3) |
354 (32.2) |
659 (29.4) |
0.094 |
Government Health Insurance |
1066 (26.6) |
353 (26.8) |
713 (26.6) |
0.894 |