Table 3.

Multivariate logistic regression analysis to identify independent risk factors for transfusion in TKA

	OR	95%CI	P value
Female	1.545	0.750–3.182	0.238
Preoperative hemoglobin level	0.959	0.942–0.977	< 0.001*
Intraoperative blood loss	1.005	1.003–1.007	< 0.001*

OR odds ratio, CI confidence interval

*P < 0.05 was considered statistically significant