Table 2. Results of meta-regression for the prevalence of antepartum hemorrhage.
| Covariate | coefficient | 95% CI | t-value | P-value |
|---|---|---|---|---|
| Age (year) | −0.0267 | −0.0642–0.0108 | −1.47 | 0.155 |
| GA (week) | −0.0377 | −0.0963–0.0209 | −1.35 | 0.193 |
| Survey year | −0.0101 | −0.0191–0.0009 | −2.25 | 0.033 |
| AP | −0.1271 | −0.8381–0.5839 | −0.39 | 0.704 |
| PCS | 0.1093 | −0.3571–0.5757 | 0.49 | 0.630 |
| MP | 0.6584 | 0.0791–1.2377 | 2.42 | 0.029 |
| QS | 0.0211 | −0.0567–0.0988 | 0.56 | 0.583 |
AP: placenta on anterior wall; GA: gestational age; MP: multiperous; PCS: previous cesarean section; QS: quality score.