Table 5.

Multivariate linear regression analysis related factors for changes in SMI.

Outcome/independent predictors	95% CI		P-value	Adjusted R2
	lower	Upper
Δ SMI (Total patients)
Initial BBS	0.004	0.018	0.002	0.245
Δ FAC	0.008	0.161	0.031
Δ SMI (Study group)
Initial K-MBI	0.002	0.017	0.01	0.396
Δ Grip strength	0.003	0.107	0.038

Values are mean ± SD. SMI, skeletal muscle index; BBS, Berg balance scale; FAC, functional ambulatory category; K-MBI, Korean version of the modified Barthel index.