Table 2 ABO phenotype by placental malaria category and parity
Placental malaria | Phenotype N (%) | OR compared to non-O (95% CI) | |||||
|---|---|---|---|---|---|---|---|
Type | No | A | B | AB | O | ||
Primiparae | Active | 45 | 5 (9.8) | 11 (22) | 1 | 28 (29) | 2.18 (1.05–4.55) |
Past | 103 | 31 (61) | 26 (52) | 4 | 42 (44) | 1.00 (0.54–1.85) | |
None | 55 | 15 (29) | 13 (26) | 1 | 26 (27) | 0.58 (0.22–1.01) | |
Total | 203 | 51 | 50 | 6 | 96 | ||
Multiparae | Active | 78 | 21 (22) | 22 (20) | 5 | 30 (14) | 0.59 (0.36–0.98) |
Past | 56 | 12 (12) | 14 (13) | 5 | 25 (12) | 0.82 (0.46–1.43) | |
None | 300 | 62 (65) | 75 (68) | 5 | 158 (74) | 1.68 (1.12–2.52) | |
Total | 434 | 95 | 111 | 15 | 213 | ||