| Outcome or subgroup | Studies | Participants | Statistical method | Effect estimate |
|---|---|---|---|---|
| 41. Stillbirth | 3 | 1913 | Risk Ratio (M‐H, Random, 95% CI) | 0.39 [0.19, 0.80] |
| 411. Second Trimester | 1 | 1446 | Risk Ratio (M‐H, Random, 95% CI) | 0.45 [0.20, 1.04] |
| 412. Third Trimester | 1 | 443 | Risk Ratio (M‐H, Random, 95% CI) | 0.25 [0.05, 1.17] |
| 413. Whole Pregnancy | 1 | 24 | Risk Ratio (M‐H, Random, 95% CI) | 0.33 [0.01, 7.45] |