Table 3.
Effect of blood group O on resistance severe malaria in Kenya
| Category | Blood group |
||||
|---|---|---|---|---|---|
| A | AB | B | O* | Non-O* | |
| 1993 | |||||
| Severe n = 19 | 5 (26.3) | 7 (36.8) | 3 (15.8) | 4 (21.1) | 15 (78.9) |
| Uncomplicated n = 36 | 9 (25.0) | 2 (5.6) | 6 (16.7) | 19 (52.8) | 17 (47.2) |
| 2003 | |||||
| Severe n = 20 | 7 (35.0) | 0 (0) | 6 (30.0) | 7 (35.0) | 13 (65.0) |
| Uncomplicated n = 19 | 3 (15.8) | 0 (0) | 4 (21.1) | 12 (63.2) | 7 (36.8) |
Shown are the numbers in each blood group with percentage in parentheses.
*Statistics for the comparison of group O vs. non-O patients: 1993: χ2, 5.15; OR, 0.24; 95% CI, 0.07–0.83; P = 0.043. 2003: χ2, 3.09; OR, 0.31; 95% CI, 0.09–1.14; P = 0.11.