Table 2. Inter-examiner reliability for neck circumference measurement.

	n	ICC (2,1)	95% CI	Bias	95% LOA
ALL	108	0.98	[0.97–0.99]	0.1	−0.9 to 1.2
Male	66	0.98	[0.97–0.99]	0.0	−0.9 to 1.0
Female	42	0.95	[0.88–0.98]	0.3	−0.8 to 1.4
Age (years) 65–74	19	0.98	[0.94–0.99]	0.1	−1.2 to 1.3
Age (years) ≥ 75	89	0.98	[0.98–0.99]	0.1	−0.8 to 1.1
ECW/TBW < 0.40	68	0.98	[0.97–0.99]	0.1	−1.0 to 1.2
ECW/TBW ≥ 0.40	40	0.98	[0.96–0.99]	0.2	−0.8 to 1.1

Note:

ICC, intraclass correlation coefficient; LOA, limit of agreement; MDC, minimal detectable change; CI, confidence interval; ECW/TBW, extracellular water/total body water; Bias, mean value of the difference between methods.