Table 3.

Multivariable analyses of factors independently associated with physical function

Variable	Regression coefficient	Standard error	P value	VIF	Semi-partial R2	Adjusted R2
	(95% confidence interval)
Physical Function Scale						0.57
SF-36 Mental Component Scale	0.72 (0.62 to 0.82)	0.050	<0.001	1.02	0.57
Surgery type
Amputation	Reference value
Lower Extremity Functional Scale
Trauma location						0.39
Foot or ankle	Reference value
Cruris or knee	5.7 (0.9 to 10)	2.4	0.02	1.07	0.02
SF-36 Mental Component Scale	0.81 (0.63 to 0.99)	8.9	<0.001	1.03	0.33
Surgery type
Amputation	Reference value
Reconstruction	3.9 (–1.9 to 9.7)	2.9	0.18	1.35

Multivariable analysis of factors that are independently associated with physical functioning corrected for hospital, tobacco use, cardiovascular disease, Gustilo classification, trauma location, and age. Only the semi-partial R² of significant values is displayed. Bold indicates statistical significance, P < 0.05

LEFS Lower Extremity Functional Scale questionnaires, PCS Physical Component Score, CI confidence interval, VIF variance inflation factor, SF-36 Short-Form 36