Table 3.

Consistency analysis of BIA and ADP measurements of FM and FFM in children aged 3–5 years.

	Boys				Girls
	n	CCCa	Log (BIA) - log (ADP)	LoA	n	CCCa	Log (BIA)-log (ADP)	LoA
FM (kg)
All	513	0.76	−0.105	−0.470 to 0.261	468	0.79	−0.067	−0.408 to 0.274
Age (yrs)
3	163	0.50	−0.119	−0.476 to 0.238	161	0.67	−0.053	−0.396 to 0.290
4	200	0.70	−0.147	−0.484 to 0.189	175	0.70	−0.131	−0.452 to 0.191
5	150	0.88	−0.031	−0.402 to 0.340	132	0.90	−0.001	−0.308 to 0.307
BMI groups b
Normal	449	0.36	−0.125	−0.488 to 0.237	421	0.54	−0.076	−0.427 to 0.274
Overweight	29	0.62	0.020	−0.281 to 0.321	30	0.74	0.006	−0.187 to 0.199
Obesity	35	0.86	0.058	−0.100 to 0.217	17	0.88	0.034	−0.079 to 0.147
FFM (kg)
All	513	0.85	0.029	−0.052 to 0.110	468	0.85	−0.019	−0.055 to 0.093
Age (yrs)
3	163	0.58	0.038	−0.036 to 0.112	161	0.64	0.018	−0.047 to 0.084
4	200	0.68	0.041	−0.039 to 0.122	175	0.61	0.038	−0.031 to 0.108
5	150	0.86	0.003	−0.061 to 0.067	132	0.85	−0.006	−0.064 to 0.052
BMI groups b
Normal	449	0.79	0.034	−0.042 to 0.111	421	0.78	0.022	−0.050 to 0.095
Overweight	29	0.79	0.000	−0.080 to 0.082	30	0.79	−0.007	−0.073 to 0.060
Obesity	35	0.83	−0.017	−0.073 to 0.040	17	0.81	−0.019	−0.056 to 0.019

^aAll P < 0.001. ^bBMI groups are determined by the WHO 2006 standard based on ADP measurements (20). ADP, air displacement plethysmography; BIA, bioelectrical impedance analysis; BMI, body mass index; FM, fat mass; FFM, fat-free mass; CCC, Lin's concordance correlation coefficient; LoA, limit of agreement.