Table 2.

Regression analysis of the associations of the psoas muscle index and psoas muscle density with baseline variables.

Variables	Psoas muscle index				Psoas muscle density
	Univariate analysis		Multivariate analysis		Univariate analysis		Multivariate analysis
	r	p-value	β	p-value	r	p-value	β	p-value
Age	− 0.367	< 0.0001	− 0.142	0.094	− 0.450	< 0.0001	− 0.289	0.0001
Male	0.418	< 0.0001	0.309	< 0.0001	NA	NA	NA	NA
GNRI	0.481	< 0.0001	0.322	< 0.0001	0.333	< 0.0001	0.052	0.52
SCI	0.484	< 0.0001	0.113	0.23	0.375	< 0.0001	0.083	0.35
Log CRP	− 0.217	0.0028	− 0.014	0.83	− 0.392	< 0.0001	− 0.244	0.0011

GNRI geriatric nutritional risk index, SCI simplified creatinine index, CRP C-reactive protein, NA not applicable.