Table 4 Risk factors for postoperative blood transfusion in patients undergoing TKA Surgery
From: The role of routine laboratory tests after unilateral total knee arthroplasty
Risk factor | odds ratio | 95% confidence interval | P value |
|---|---|---|---|
Age | 1.148 | 1.068–1.234 | < 0.001 |
Preoperative hb level | 0.665 | 0.590–0.748 | < 0.001 |
Estimated blood loss | 1.008 | 1.005–1.011 | < 0.001 |
Operative time | 1.007 | 0.996–1.019 | 0.210 |