Reproducibility of Bioelectrical Impedance Analysis in Pregnancy and the Association of Body Composition with the Risk of Gestational Diabetes: A Substudy of MUMS Cohort

Table 3

Reproducibility in the method comparison of Bodystat, RJL, and Tanita for estimation of TBW%.

	ICC^a	ICC 95% CI	Average difference^b	LOA	value^c
Bodystat vs. RJL
T1	0.951	0.929–0.965	1.34	−1.96, 4.64	<0.001
T2	0.965	0.949–0.976	1.01	−.61, 3.63	<0.001
T3	0.951	0.927–0.967	0.55	−2.46, 3.56	<0.001
Bodystat vs. Tanita
T1	0.926	0.895–0.949	1.66	−2.28, 5.60	<0.001
T2	0.824	0.750–0.877	1.16	−4.60, 6.91	<0.001
T3	0.805	0.723–0.865	1.67	−3.83, 7.17	<0.001

^a value for ICC all <0.001. ^bDifferences calculated as Bodystat minus RJL or Tanita. ^c value for paired t-test of differences between instruments. CI: confidence interval; ICC: intraclass correlation coefficient; LOA: limits of agreement; and T1/2/3: trimester 1/2/3.