Table 4.

Univariate linear regression analysis related factors for changes in SMI (dependent variable: Δ SMI).

Variables	Estimated	Total				Estimated	Study group
		95% CI		R2	P-value		95% CI		R2	P-value
		Lower	Upper				Lower	Upper
initial K-MBI	0.0056	0.003	0.010	0.080*	0.039	0.0110	0.004	0.018	0.274*	0.005
Initial BBS	0.0117	0.005	0.019	0.171*	0.002	0.0238	0.007	0.041	0.246*	0.009
Initial FAC	0.1233	0.031	0.216	0.122*	0.01	0.1994	0.053	0.346	0.240*	0.010
Initial MFT	0.0059	−0.005	0.017	0.023	0.274	0.0161	0.003	0.030	0.193*	0.022
Initial DOSS	0.0589	0.016	0.101	0.129*	0.008	0.0820	0.019	0.145	0.23*	0.012
Initial SMI	−0.0167	−0.136	0.102	0.002	0.779	−0.0172	−0.186	0.152	0.002	0.836
Initial grip strength	0.0083	−0.005	0.021	0.031	0.203	0.0174	0.008	0.034	0.158*	0.040
Δ K-MBI	0.0089	0.001	0.017	0.086*	0.032	0.0106	−0.005	0.026	0.070	0.182
Δ BBS	0.0080	0.001	0.015	0.088*	0.030	0.0133	0.003	0.024	0.213*	0.016
Δ FAC	0.0949	0.013	0.177	0.093*	0.025	0.1861	0.068	0.305	0.295*	0.003
Δ MFT	0.0230	−0.001	0.046	0.071	0.051	0.0326	−0.014	0.079	0.076	0.163
Δ FDS	−0.0057	−0.015	0.004	0.026	0.248	−0.0068	−0.027	0.014	0.019	0.496
Δ DOSS	−0.0376	−0.107	0.032	0.022	0.282	−0.0226	−0.121	0.076	0.009	0.641
Δ Grip strength	0.0301	0.001	0.059	0.077*	0.042	0.0694	0.012	0.127	0.198*	0.020

Values are mean ± SD. K-MBI, Korean version of modified Barthel index; BBS, Berg balance scale; FAC, functional ambulatory category; MFT, manual function test; FDS, functional dysphagia scale; DOSS, dysphagia outcome and severity scale; SMI, skeletal muscle index;

^*p < 0.05 according to univariate linear regression analysis.