Haematological data for the four groups
| Group 1 (n=41) | Group 2 (n=25) | Group 3 (n=35) | Group 4 (n=37) | p Value | |
| Mother | Rh− | Rh− | Rh− | O+ | |
| Infant | Rh+ | Rh+ | Rh− | Rh+ or Rh− | |
| Anti-D doses | 1 | 2 | 1 or 2 | None | |
| Haemoglobin (g/100 ml) | 19.5 (2.0) | 19.2 (2.2) | 19.2 (2.5) | 18.7 (2.2) | 0.51 |
| Packed cell volume | 60.2 (6.6) | 58.8 (7.0) | 59 (8.3) | 57.6 (7.0) | 0.47 |
| MCV (μm3) | 107.3 (4.7) | 109.1 (4.4) | 105 (6.0) | 106 (5.0) | 0.02 |
| Reticulocytes (%) | 5.5 (1.2) | 5.4 (1.3) | 4.9 (1.4) | 4.6 (1.3) | 0.1 |
| No with hyperbilirubinaemia (>12 mg/dl) | 2 (4.8%) | 2 (8%) | 2 (5.7%) | Not done | 0.87 |
| No with direct Coombs positive | 1 (2.4%) | 5 (20%) | 0 | 0 | 0.025 |
Values are means (SD). The statistical test used was analysis of variance using the Duncan multiple comparison option.
MCV, Mean corpuscular volume.