Table 4 Secondary adjusted analyses with varying definitions of the outcome (AIP)
From: Effect of high parity on occurrence of anemia in pregnancy: a cohort study
All cases (prevalent & incident) | Incident cases only | |||||||
|---|---|---|---|---|---|---|---|---|
Hb < 11.0 g/dl | Hb < 10.5 g/dl | Hb < 10.0 g/dl | ||||||
Parity | RR† | 95% CI* | RR† | 95% CI | RR† | 95% CI | RR† | 95% CI |
LP | 1.00 | - | 1.00 | - | 1.00 | - | 1.00 | - |
HP | 1.11 | (0.91, 1.18) | 2.92 | (2.02, 4.59) | 2.97 | (1.93, 4.91) | 3.12 | (1.87, 5.25) |
1 | 1.20 | (0.92, 1.66) | 1.09 | (0.48, 1.88) | 1.32 | (0.63, 4.13) | 1.97 | (1.01, 12.03) |
2-3 | 1.00 | - | 1.00 | - | 1.00 | - | 1.00 | - |
4-5 | 0.89 | (0.55, 1.58) | 1.14 | (0.42, 1.99) | 1.47 | (0.41, 3.24) | 1.76 | (0.27, 5.78) |
6-7 | 1.15 | (0.58, 2.00) | 3.01 | (2.06, 7.02) | 3.94 | (1.52, 7.89) | 4.35 | (1.06, 14.57) |
8-9 | 1.13 | (0.30, 1.99) | 5.67 | (3.55, 13.16) | 8.63 | (2.70, 13.62) | 9.73 | (2.21, 29.61) |
≥ 10 | 1.19 | (0.41, 2.46) | 4.32 | (2.71, 14.25) | 7.18 | (2.54, 14.05) | 8.05 | (1.97, 26.04) |