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

Table 5

Logistic regression model for presarcopenia according to sex.

Variables	Male			Female
		Odds ratio (95% CI)			Odds ratio (95% CI)
NC by BIA (cm)	-1.18	0.31 (0.17-0.54)	<0.001	-0.80	0.45 (0.34-0.59)	<0.001
Body weight (kg)	-0.34	0.71 (0.61-0.83)	<0.001	-0.25	0.78 (0.72-0.85)	<0.001
PBF (%)	-0.23	0.76 (0.65-0.88)	<0.001	-0.11	0.90 (0.85-0.95)	<0.001
Grip strength (kg)	-0.16	0.85 (0.77-0.94)	0.002	-0.17	0.84 (0.77-0.92)	<0.001
Back muscle strength (kg)	-0.05	0.96 (0.93-0.98)	0.002	-0.05	0.95 (0.93-0.98)	<0.001

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