Outcomes | < 7.0 g/dL vs.11.0–12.9 g/dL | 7.0–7.9 g/dL vs.11.0–12.9 g/dL | 8.0–8.9 g/dL vs.11.0–12.9 g/dL | 9.0–9.9 g/dL vs.11.0–12.9 g/dL | 10.0–10.9 g/dL vs.11.0–12.9 g/dL | ≥ 13.0 g/dL vs.11.0–12.9 g/dL | ||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
RR/MD(95% CI) | P-value | RR/MD(95% CI) | P-value | RR/MD(95% CI) | P-value | RR/MD(95% CI) | P-value | RR/MD(95% CI) | P-value | RR/MD(95% CI) | P-value | |
Maternal Outcomes | ||||||||||||
Maternal death < 42 days | – | – | – | – | – | – | – | – | – | – | – | – |
Antepartum hemorrhage | 3.28(1.67, 6.45) | 0.0006 | 1.63(0.90, 2.96) | 0.1054 | 1.13(0.74, 1.71) | 0.5729 | 1.17(0.88, 1.57) | 0.2802 | 0.96(0.73, 1.26) | 0.7590 | 0.73(0.27, 1.97) | 0.5381 |
Postpartum hemorrhage2 | 4.48(2.62, 7.66) | <.0001 | 1.74(0.95, 3.17) | 0.0726 | 1.33(0.89, 1.98) | 0.1606 | 0.82(0.63, 1.06) | 0.1294 | 0.88(0.72, 1.09) | 0.2524 | 0.82(0.28, 2.42) | 0.7166 |
Hypertensive disease /pre-eclampsia/ eclampsia2 | 1.89(1.12, 3.18) | 0.0169 | 1.07(0.73, 1.59) | 0.7247 | 1.04(0.94, 1.16) | 0.4312 | 0.93(0.84, 1.02) | 0.1308 | 0.87(0.79, 0.95) | 0.0024 | 1.46(1.13, 1.89) | 0.0034 |
Obstructed labor | 0.96(0.71, 1.31) | 0.7919 | 0.86(0.70, 1.06) | 0.1593 | 0.84(0.75, 0.94) | 0.0019 | 0.86(0.81, 0.92) | <.0001 | 0.92(0.88, 0.96) | 0.0004 | 1.05(0.86, 1.28) | 0.6263 |
C-delivery2 | 0.96(0.80, 1.15) | 0.6382 | 0.76(0.68, 0.85) | <.0001 | 0.80(0.76, 0.85) | <.0001 | 0.81(0.78, 0.84) | <.0001 | 0.87(0.85, 0.89) | <.0001 | 1.01(0.93, 1.10) | 0.7884 |
Preterm | 1.47(1.19, 1.82) | 0.0004 | 1.35(1.16, 1.58) | 0.0001 | 1.23(1.15, 1.32) | <.0001 | 1.14(1.08, 1.21) | <.0001 | 1.04(0.98, 1.10) | 0.1751 | 0.99(0.87, 1.14) | 0.9372 |
Fetal/Neonatal Outcomes | ||||||||||||
Stillbirth | 2.20(1.35, 3.60) | 0.0017 | 1.45(0.94, 2.22) | 0.0931 | 1.26(1.10, 1.45) | 0.0011 | 1.14(1.02, 1.28) | 0.0246 | 1.00(0.90, 1.11) | 0.9965 | 1.03(0.72, 1.47) | 0.8790 |
Neonatal mortality < 7 days | 2.30(1.36, 3.91) | 0.0019 | 1.84(1.27, 2.67) | 0.0012 | 1.44(1.15, 1.81) | 0.0013 | 1.29(1.12, 1.50) | 0.0006 | 1.08(0.93, 1.26) | 0.3240 | 0.93(0.60, 1.44) | 0.7547 |
Neonatal mortality < 28 days | 2.02(1.19, 3.43) | 0.0094 | 1.63(1.13, 2.36) | 0.0090 | 1.44(1.17, 1.78) | 0.0006 | 1.25(1.08, 1.46) | 0.0034 | 1.10(0.95, 1.27) | 0.2197 | 1.02(0.70, 1.46) | 0.9322 |
Birth weight (g) | −92.4(−148.7, −36.1) | 0.0013 | −86.2(−115.9, −56.5) | <.0001 | −55.5(−68.0, −43.1) | <.0001 | −38.9(−47.4, −30.5) | <.0001 | −9.8(− 18.1, − 1.4) | 0.0226 | −26.1(−52.4, 0.1) | 0.0509 |
Low birth weight(< 2500 g) | 1.32(1.05, 1.66) | 0.0171 | 1.33(1.18, 1.51) | <.0001 | 1.16(1.10, 1.22) | <.0001 | 1.06(1.00, 1.12) | 0.0524 | 0.99(0.95, 1.03) | 0.5591 | 1.08(0.95, 1.24) | 0.2390 |