Table 2.
Adjusted Risk of miscarriage Before 20 Weeks of Gestation
| Risk factors | Rate of Pregnancy Loss at Less Than 20 wk |
Unadjusted OR (95% CI) |
Adjusted ORa (95% CI) |
|---|---|---|---|
| Subchorionic hematoma | 6.25 (4.14–9.43) | 14.27 (8.25–24.70) | |
| Yes | 30.14 | ||
| No | 6.46 | ||
| Previous term delivery | 0.88 (0.57–1.35) | 0.83 (0.45–1.51) | |
| YES | 10.37 | ||
| NO | 11.63 | ||
| Previous miscarriage | 1.06 (0.71–1.59) | 0.62 (0.36–1.09) | |
| YES | 11.54 | ||
| NO | 10.98 | ||
| Conceived methods | 0.59 (0.38–0.92) | 0.52 (0.26–1.04) | |
| Natural conception | 13.22 | ||
| Assisted conception | 8.24 | ||
| Accompanied bleeding | 2.12 (1.35–3.31) | 1.06 (0.60–1.85) | |
| YES | 13.29 | ||
| NO | 6.76 |
Data are n/N (%) unless otherwise specified
aFinal regression model included subchorionic hematoma, previous term delivery, previous miscarriage, conceived methods, and accompanied bleeding