Bioelectrical Impedance Analysis and Manual Measurements of Neck Circumference Are Interchangeable, and Declining Neck Circumference Is Related to Presarcopenia

Table 4

Logistic regression model for presarcopenia in all the participants.

Variables		Odds ratio (95% CI)
NC by BIA (cm)	-0.49	0.61 (0.53-0.70)	<0.001
Body weight (kg)	-0.19	0.82 (0.78-0.87)	<0.001
Grip strength (kg)	-0.09	0.91 (0.87-0.95)	<0.001
Back muscle strength (kg)	-0.03	0.97 (0.96-0.99)	<0.001
PBF (%)	-0.07	0.94 (0.90-0.98)	0.003
Sex (male)	-0.71	0.49 (0.26-0.91)	0.025
Age (years)			0.116

All variables () that showed a certain degree of difference in univariate analysis were used as covariates. The dependent variable was presarcopenia. Covariates were age, sex, body weight, PBF, NC by BIA, grip strength, and back muscle strength. Bold values indicate significant difference. : partial regression coefficient; CI: confidence intervals; NC: neck circumference; BIA: bioelectrical impedance analysis; PBF: percent body fat.