Table 4 Multivariable analysis of predictors of blood loss following total knee arthroplasty
Intra-operative blood loss (mL) | ||
|---|---|---|
Predictor | Regression coefficient (95 % CI) | p value |
Age | 10.3 (4.8 to 15.9) | <0.001 |
Surgeon B | −131 (−235 to −27) | 0.01 |
Drain Volume (mL) | ||
Predictor | Regression coefficient (95 % CI) | p value |
Medication (reference category is rivaroxaban alone) | <0.001 | |
Low molecular weight heparin | −282 (−360 to −205) | <0.001 |
Warfarin | −238 (−406 to −70) | 0.01 |
Aspirin | −300 (−464 to −137) | <0.001 |
Aspirin + rivaroxaban | 133 (−2 to 267) | 0.05 |
Aspirin + LMWH | −232 (−372 to −93) | 0.001 |
Type of anaesthetic (reference category is general anaesthetic alone) | 0.02 | |
Spinal | −290 (−621 to 41) | 0.09 |
Regional | 24 (−187 to 236) | 0.82 |
General + regional | −193 (−341 to −45) | 0.01 |
Spinal + regional | −201 (−350 to −51) | 0.01 |
General + spinal + regional | −218 (−410 to −26) | 0.03 |
Haemoglobin loss (g/L) | ||
Predictor | Regression coefficient (95 % CI) | p value |
Surgeon B | −4.3 (−8.5 to −0.1) | 0.04 |