Table 4 Meta-analysis of association between high maternal Hb and maternal outcomes
| Â | Post-Partum Hemorrhage OR (95% CI) | Transfusion OR (95% CI) | Pre-Eclampsia OR (95% CI) | Gestational Diabetes OR (95% CI) | Postpartum Depression OR (95% CI) | Prenatal Depression OR (95% CI) | Maternal Mortality OR (95% CI) |
|---|---|---|---|---|---|---|---|
Timing: high maternal Hb (> 130) by timing |  |  |  |  |  | ||
Preconception | -- | -- | -- | 1.24a (1.11–1.38) | -- | -- | -- |
First trimester | -- | -- | 1.61a (0.92–2.84) | 1.73b (1.10–2.71) | -- | -- | -- |
Second trimester | 1.01a (0.95–1.15) | -- | 1.60a (1.03–2.48) | -- | -- | -- | -- |
Third trimester | -- | -- | 1.27a (1.18–1.36) | -- | -- | -- | -- |
Cutoff: high maternal Hb at any time during pregnancy by cutoff | |||||||
≥ 130 g/L | 1.00b (0.95–1.05) | -- | 1.34 (1.16–1.56) | 1.71 (1.19–2.46) | -- | -- | 2.01a (1.12–3.61) |
≥ 140 g/L | 1.00b (0.87–1.14) | -- | 1.58b (0.88–2.83) | 2.10b (1.65–2.68) | -- | -- | 2.01a (1.12–3.61) |
≥ 150 g/L | -- | -- | 2.38a (1.20–4.69) | -- | -- | -- | -- |
Overall estimate* ≥ 130 g/L | 1.00b (0.95–1.05) | -- | 1.34 (1.16–1.56) | 1.71 (1.19–2.46) | -- | -- | 2.01a (1.12–3.61) |