Table 3 Risk of placental abruption in Black compared to White women by gestational age category (categorical analysis)
From: A population-based study of race-specific risk for placental abruption
Birth Outcome | Â | Black | White | Unadjusted | Adjusted* |
|---|---|---|---|---|---|
| Â | n (%) | n (%) | n (%) | RR (95% CI) | OR (95% CI) |
Total births | 664,303 | 108,806 | 555,497 | Â | Â |
No Abruption | 658,922 (99.19) | 107,663 (98.95) | 551,259 (99.24) | Reference | Reference |
Abruption†| 5,065 (0.76) | 1,108 (1.02) | 3,957 (0.71) | 1.43 (1.34–1.53) | 1.32 (1.22–1.43) |
   Abruption and Term Births (≥ 35)‡ | 3,310 (0.50) | 605 (0.56) | 2,705 (0.49) | 1.15 (1.05–1.25) | 1.15 (1.02–1.29) |
   Abruption and Late PTB (32–34)‡ | 725 (0.11) | 161 (0.15) | 564 (0.10) | 1.46 (1.23–1.74) | 1.29 (1.09–1.53) |
   Abruption and Very PTB (28–31)‡ | 550 (0.08) | 168 (0.15) | 382 (0.07) | 2.25 (1.88–2.70) | 1.92 (1.58–2.33) |
   Abruption and Extreme PTB (20–27)‡ | 466 (0.07) | 170 (0.16) | 296 (0.05) | 2.94 (2.43–3.55) | 1.98 (1.58–2.48) |