Table 5 Multivariate analysis: baseline factors associated with increased risk of transfusion
| Â | N case; N control | Case | Control | Odds Ratio (95% CI) |
|---|---|---|---|---|
Social work involvement – n (%) | 145; 145 | 34 (23) | 8 (6) | 4.1 (1.8–10.1) |
IV iron supplementation in pregnancy – n (%) | 145; 145 | 22 (15) | 3 (2) | 3.8 (1.2–17.4) |
Unplanned cesarean section – n (%) | 145; 145 | 67 (46) | 27 (19) | 2.8 (1.3–6.2) |
Iron deficiency anemia in pregnancy – n (%) | 145; 145 | 32 (22) | 11 (8) | 2.0 (0.9–4.6) |
Residence in lowest quartile income neighborhood – n (%) | 144; 145 | 44 (31) | 26 (18) | 1.5 (0.8–2.9) |
Highest RDW in pregnancy - median (IQR) | 144; 145 | 14.3 (1.5) | 13.9 (1.2) | 1.2 (0.9–1.4) |
Vaginal delivery – n (%) | 145; 145 | 58 (40) | 90 (62) | 1.0 (0.5–2.0) |