Table 3.

The consistency of the VFA between BIA and QCT using the Bland–Altman and ICC method according to the gender, BMI and age groups.

	N	VFA-QCT (cm2)	VFA-BIA (cm2)	VFA-QCT-VFA-BIA (cm2)	*p	†p	ICC
Total	2754	174.18 ± 79.81	100.68 ± 34.28	73.51 ± 68.87	< 0.001		0.216
Gender						< 0.001
Male	1491	216.85 ± 73.84	96.517 ± 32.57	120.34 ± 53.53	< 0.001		0.174
Female	1263	123.81 ± 52.59	105.59 ± 35.59	18.22 ± 36.23	< 0.001		0.623
BMI (kg/m2)						< 0.001
< 18.5	33	49.66 ± 22.04	46.37 ± 11.63	3.29 ± 19.17	0.332		0.408
18.5–23.9	1024	116.31 ± 51.18	77.64 ± 20.29	38.67 ± 50.56	< 0.001		0.105
24–27.9	1210	192.83 ± 60.61	104.19 ± 24.61	88.64 ± 65.44	< 0.001		0.001
28–29.9	262	237.04 ± 63.55	128.3 ± 26.47	108.74 ± 72.42	< 0.001		− 0.031
≥ 30	225	282.33 ± 76.63	162.42 ± 28.42	119.91 ± 78.81	< 0.001		0.022
Age (years)						< 0.001
20–39	347	161.48 ± 82.84	97.37 ± 36.97	64.11 ± 66.07	< 0.001		0.313
40–49	1036	164.05 ± 81	95.35 ± 30.43	68.7 ± 70.9	< 0.001		0.202
50–59	1016	182.66 ± 76.95	104.98 ± 35.41	77.68 ± 68.31	< 0.001		0.190
60–69	295	188.38 ± 74.08	104.74 ± 34.05	83.65 ± 64.92	< 0.001		0.178
≥ 70	60	209.27 ± 79.96	118.96 ± 43.91	90.31 ± 64.89	< 0.001		0.251
Male (1491)
BMI (kg/m2)						< 0.001
< 24	378	147.21 ± 54.79	65.96 ± 15.52	81.25 ± 46.15	< 0.001		0.113
≥ 24	1113	240.51 ± 63.88	106.89 ± 30.24	133.61 ± 49.22	< 0.001		0.113
Age (Years)						< 0.001
< 50	774	211.32 ± 71.64	96.25 ± 32.65	115.07 ± 52.38	< 0.001		0.178
≥ 50	717	222.82 ± 75.75	96.8 ± 32.5	126.02 ± 54.22	< 0.001		0.170
Female (1263)
BMI (kg/m2)						< 0.001
< 24	679	95.87 ± 39.65	82.62 ± 20.98	13.25 ± 33.05	< 0.001		0.421
≥ 24	584	156.29 ± 46.82	132.3 ± 30.01	24 ± 38.83	< 0.001		0.432
Age (years)						< 0.001
< 50	609	102.5 ± 43.73	95.36 ± 31.62	7.15 ± 32.14	< 0.001		0.634
≥ 50	654	143.65 ± 52.4	115.12 ± 36.45	28.53 ± 36.79	< 0.001		0.557