| BL GR RH+ | Fetal distress | Total | X2 p | ||
| No | Yes | ||||
| A | No | 32 | 3 | 35 | 1.103 0.894 |
| % | 23.9% | 18.8% | 23.3% | ||
| AB | No | 12 | 2 | 14 | |
| % | 9.0% | 12.5% | 9.3% | ||
| B | No | 19 | 3 | 22 | |
| % | 14.2% | 18.8% | 14.7% | ||
| O | No | 45 | 4 | 49 | |
| % | 33.6% | 25.0% | 32.7% | ||
| BL GR RH- | |||||
| A | No | 11 | 0 | 11 | 18.670 0.001* |
| % | 8.2% | .0% | 7.3% | ||
| AB | No | 3 | 0 | 3 | |
| % | 2.2% | .0% | 2.0% | ||
| B | No | 0 | 2 | 2 | |
| % | .0% | 12.5% | 1.3% | ||
| O | No | 12 | 2 | 14 | |
| % | 9.0% | 12.5% | 9.3% | ||