The relationship between DXA-based and anthropometric measures of visceral fat and morbidity in women

Table 3 Visceral adipose tissue area (VAT area) linear model estimates and correlational indices

	Model	Reported R ²	TwinsUK R ²
A
Snijder et al. (2002) [11]	DXA trunk fat + sagittal depth	0.74	0.80
Snijder et al. (2002) [11]	DXA trunk fat + abdominal circumference	0.71	0.78
Treuth et al. (1995) [15]	Sagittal depth + age + waist circumference +% DXA trunk fat	0.81	0.79
Hill et al. (2007) [10]	DXA + skin fold	0.68	0.65
B	Index	Reported r	TwinsUK
Bertin et al. (2002) [8]	Index	Reported r	r
	Abdominal fat mass (kg)	0.57	0.79
	Thigh fat mass (kg)	0.06*	-
	Abdominal fat mass/thigh fat mass	0.75	-
	Abdominal fat mass/SFW	0.83	0.58
	TED (cm)	0.54	0.61
	TID (cm)	0.9	0.61
	SFW (cm)	−0.23*	0.28
	(SD)(TID)	0.89	0.87
	(SD)(TID)/height	0.91	0.86
	(SD)(TID)/BMI	0.66	0.49
	(SD-SFW)	0.86	0.89
	(SD-SFW)(TID)	0.92	0.79
	(SD-SFW)(TID)/height	0.94	0.87

Previously reported models in the literature were applied to the TwinsUK validation sample of CT-measured VAT area (n = 54) and the coefficient of determination (R ²) is presented for each study as an indication of the proportion of VAT variance explained by the model. (A). The Pearson product–moment correlation coefficients between CT-measured VAT area and adiposity indices described in Bertin et al. (2002) were also calculated for the TwinsUK validation sample (B). Note that the reported linear models all replicate using TwinsUK and that highest correlational indices (r > 0.85) for VAT area were all anthropometric measures that relate to size of the body cavity area. Skin fold was estimated using the formula SFW = (TED – TID)/2 applied to DXA data, as calliper skin fold measure was not taken for the TwinsUK study. Asterisks in table B indicate the reported correlation coefficient does not differ significantly from zero (at threshold α = 0.05). Abbreviations: DXA, dual-energy X-ray absorptiometry, SD, sagittal depth, SFW, subcutaneous fat width, TED, transverse external diameter, TID, transverse internal diameter.

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