Assessment of whole-body and regional body fat using abdominal quantitative computed tomography in Chinese women and men

Table 4 Results of the stepwise regression analysis for the prediction of whole-body and regional fat percentages in women in the equation group

Dependent DXA variable	Independent QCT variable	Prediction equation	Adjusted R²	SEE
TBF%	T12/L1%fat	0.34 × T12/L1%fat + 24.36	0.68	3.54
	L1/L2%fat	0.22 × L1/L2%fat + 0.22 × weight + 12.37	0.64	3.74
	L2/L3%fat	0.26 × L2/L3%fat + 0.22 × weight + 9.62	0.71	3.36
	L3/L4%fat	0.38 × L3/L4%fat + 0.51 × BMI + 2.88	0.77	2.99
	L4/L5%fat	0.50 × L4/L5%fat + 0.57 × BMI-7.41	0.80	2.83
	L5/S1%fat	0.52 × L5/S1%fat + 0.16 × weight-3.52	0.81	2.73
Android %fat	T12/L1%fat	0.34 × T12/L1%fat + 0.75 × BMI + 11.51	0.69	5.09
	L1/L2%fat	0.34 × L1/L2%fat + 0.31 × weight + 7.92	0.68	5.17
	L2/L3%fat	0.47 × L2/L3%fat + 0.27 × BMI + 1.53	0.83	3.83
	L3/L4%fat	0.62 × L3/L4%fat + 0.66 × BMI-8.81	0.86	3.48
	L4/L5%fat	0.75 × L4/L5%fat + 0.84 × BMI-23.88	0.84	3.69
	L5/S1%fat	0.76 × L5/S1%fat + 0.23 × weight-17.14	0.83	3.82
Gynoid %fat	T12/L1%fat	0.21 × T12/L1%fat + 31.45	0.30	4.83
	L1/L2%fat	0.15 × L1/L2%fat + 0.47 × BMI-0.13 × age + 27.77	0.32	4.78
	L2/L3%fat	0.17 × L2/L3%fat + 0.52 × BMI-0.14 × age + 25.47	0.33	4.73
	L3/L4%fat	0.31 × L3/L4%fat + 21.76	0.31	4.81
	L4/L5%fat	0.50 × L4/L5%fat-0.13 × age + 15.80	0.42	4.39
	L5/S1%fat	0.51 × L5/S1%fat-0.12 × age + 15.08	0.51	4.04

DXA dual-energy X-ray absorptiometry, TBF% total body fat percentage, QCT quantitative computed tomography, adjusted R² adjusted coefficient of determination, SEE standard error of the estimate

ISSN: 1476-511X