The association between bone mineral density and postoperative drainage volume following cruciate-substituting primary total knee arthroplasty: a cross-sectional study

Table 4 Multivariate regression analysis of the relationships between variables and the postoperative drainage volume

Variables	Β (SE)	t	P	VIF
Total hip status (R² = 0.449; adjusted R² = 0.202)
Anesthesia (SA vs GA)	0.218 (28.317)	2.328	0.022	1.105
Operative time (min)	0.269 (1.582)	2.514	0.014	1.447
Lumbar spine status (normal vs low)	0.103 (27.191)	1.030	0.306	1.254
Total hip status (normal vs low)	−0.272 (29.815)	−2.530	0.013	1.465
Trochanter status (R² = 0.415; adjusted R² = 0.173)
Anesthesia (SA vs GA)	0.211 (28.960)	2.210	0.029	1.115
Operative time (min)	0.311 (1.580)	2.914	0.004	1.392
Lumbar spine status (normal vs low)	0.052 (26.722)	0.534	0.595	1.169
Trochanter status (normal vs low)	−0.170 (28.697)	−1.617	0.109	1.348
Femoral neck status (R² = 0.389; adjusted R² = 0.151)
Anesthesia (SA vs GA)	0.227 (29.177)	2.354	0.020	1.103
Operative time (min)	0.362 (1.561)	3.432	0.001	1.325
Lumbar spine status (normal vs low)	0.017 (27.473)	0.165	0.869	1.204
Femoral neck status (normal vs low)	0.020 (37.517)	0.186	0.853	1.360

All models were adjusted for age, sex, body mass index, hypertension, postoperative mean arterial pressure, hemoglobin, and platelets
VIF variance inflation factor, SA spinal anesthesia, GA general anesthesia

ISSN: 2234-2451