Table 2. Derivation of scaling factors for estimation of total visceral fat mass by DXA.
| Study group | Number |
Anatomical region |
Scaling factor (ratio) | Mean (s.d.) scaling factor | |
|---|---|---|---|---|---|
| DXA L4–L5 | MRI L1–L5 | ||||
| Visceral fat mass, kg (s.d.) | |||||
| Female | |||||
| Black | 647 | 0.63 (0.30) | 1.72 (0.67) | 2.70 | 2.77 (0.06) |
| White | 422 | 0.62 (0.33) | 1.76 (0.74) | 2.80 | |
| Hispanic | 240 | 0.67 (0.28) | 1.89 (0.67) | 2.80 | |
| Male | |||||
| Black | 479 | 0.59 (0.29) | 2.11 (0.91) | 3.70 | |
| White | 398 | 0.76 (0.32) | 2.74 (1.06) | 3.61 | 3.69 (0.07) |
| Hispanic | 172 | 0.72 (0.25) | 2.70 (0.80) | 3.75 | |
Abbreviations: DXA, dual-x-ray absorptiometry; MRI, magnetic resonance imaging.