Table 6.

Multivariate analysis for LOS – Independent factors related to LOS.

	Unstandardized beta Coefficient	Standard error	Unstandardized beta coefficient	t	P value
Constant	3.234	0.615		5.262	<0.001
Step
T	Ref.
P	−1.020	0.288	−0.272	−3.537	0.001
P + BMP	−1.493	0.270	−0.525	−5.536	<0.001
P + BMP + PMP	−2.176	0.255	−0.835	−8.534	<0.001
Age	0.020	0.007	0.173	2.881	0.005
Transfusion	0.653	0.235	0.174	2.784	0.006
Surgical time	0.007	0.003	0.141	2.264	0.025