Table 4.
Adjusted risk of twin pregnancy loss before 20 gestational weeks.
| Risk factors | Twin pregnancy loss < 20 weeks | Unadjusted OR (95% CI) | Adjusted OR (95% CI) | p |
|---|---|---|---|---|
| Previous miscarriage* | 6.39 (1.449–28.178) | 5.452 (1.019–29.176) | 0.048 | |
| Yes | 21.40% | |||
| No | 4.10% | |||
| Male factor | 3.967 (0.963–16.334) | 2.398 (0.466–12.329) | 0.295 | |
| Yes | 21.40% | |||
| No | 6.40% | |||
| Fallopian tube obstruction | 0.336 (0.111–1.012) | 0.925 (0.248–3.459) | 0.908 | |
| Yes | 50% | |||
| No | 74.90% | |||
| DOR* | 4.486 (1.245–16.165) | 5.004 (1.131–22.143) | 0.034 | |
| Yes | 28.60% | |||
| No | 8.20% | |||
| SCH* | 5.03 (1.137–22.246) | 6.783 (1.822–25.258) | 0.001 | |
| Yes | 15.50% | |||
| No | 2.60% |
*P < 0.05, DOR, diminished ovarian reserve. The final regression model included subchorionic hematoma, previous term delivery, previous miscarriage, conceived methods, and accompanied bleeding.