Waist Circumference Measured by Bioelectrical Impedance Analysis Is Interchangeable with Manual Measurement: Increased Waist Circumference Is Associated with Locomotive Syndrome Risk

Table 2

Correlation coefficient (r), ICC, and Bland–Altman analysis in WC measured by two methods: manual and BIA.

	Total	Male	Female
Spearman r	0.871	0.875	0.830
ICC	0.930	0.940	0.896
Bland–Altman analysis
Bias (BIA-manual)	−2.024	−1.418	−2.460
SD	5.025	4.395	5.398
95% LOA	−11.87 to 7.83	−10.03 to 7.20	−13.04 to 8.12
Percentage error (%)	12.3	10.2	13.8

. r, correlation coefficient; ICC, interclass correlation coefficients; WC, waist circumference; BIA, bioelectrical impedance analysis; SD, standard deviation; LOA, limits of agreement.