Predicting Factors for Allogeneic Blood Transfusion and Excessive Postoperative Blood Loss after Single Low-Dosage Intra-Articular Tranexamic Acid Application in Total Knee Replacement

Table 3

Significant factors for allogeneic blood transfusion and excessive postoperative blood loss from multivariate logistic regression analysis.

Significant factors	OR	95% CI	p value
BT
Hb	0.23	0.12 to 0.43	<0.0001
BMI	0.77	0.65 to 0.91	0.003
THL > 2.7 g/dL
Hb	2.23	1.56 to 3.18	<0.0001
ETBL > 348.6 mL
Height	1.11	1.05 to 1.17	0.0002
Hb	1.65	1.15 to 2.39	0.007
Preoperative ROM	1.03	1.00 to 1.06	0.02
CrCl	1.02	1.01 to 1.04	0.006
DV/kg > 10.6 mL/kg
BMI	0.78	0.69 to 0.88	0.0001
Large prosthesis size	3.91	1.67 to 9.14	0.002

BT: blood transfusion; THL: total hemoglobin loss; ETBL: estimated total blood loss; DV/kg: drainage volume per kg.
Hb: hemoglobin; BMI: body mass index; ROM: range-of-motion; CrCl: creatinine clearance.