Table 24: Odds Ratio Estimates for Blood Transfusions
| Variable | Point Estimate | 95% Wald Confidence Limits | |
| S1S2S3 | 1.416 | 0.574 | 3.489 |
| S1S2 | 0.985 | 0.309 | 3.139 |
| S2S3* | 3.363 | 1.269 | 8.914 |
| S1S3 | 1.478 | 0.577 | 3.782 |
| S3 | 1.503 | 0.498 | 4.539 |
| A1A2* | 2.075 | 0.917 | 4.692 |
| A1* | 0.509 | 0.242 | 1.069 |
| A2 | 1.314 | 0.647 | 2.668 |
| A3 | 0.671 | 0.304 | 1.480 |
| TA* | 0.153 | 0.084 | 0.277 |
| Age_Group (0 vs 1)* | 0.352 | 0.231 | 0.537 |
| Gender (F vs M)* | 2.182 | 1.418 | 3.358 |