Table 4 Spearman correlations between dual X-ray absorptiometry (DXA) and bioimpedance (BIA)-assessed body composition by obesity status.

From: Performance of bioelectrical impedance analysis compared to dual X-ray absorptiometry (DXA) in Veterans with COPD

 

Not obese

Obese

N

31

19

BMI ± SD

26.4 ± 2.5

37.2 ± 5.1

Fat-free mass (kg)a

0.86 (< 0.0001)

0.92 (< 0.0001)

Fat mass (kg)a

0.84 (< 0.0001)

0.96 (< 0.0001)*

Total body fat %

0.50 (0.0004)

0.85 (< 0.0001)*

Trunk fat %

0.38 (0.03)

0.76 (0.0002)

Android fat %

0.32 (0.08)

0.60 (0.007)

Gynoid fat %

0.46 (0.01)

0.85 (< 0.0001)*

Arm fat %

0.57 (0.0008)

0.87 (< 0.0001)*

Leg fat %

0.33 (0.07)

0.75 (0.0002)*

  1. Data are shown as Spearman’s rho (p-value) unless otherwise noted. “Obese” was defined as a BMI ≥ 30.
  2. *Denotes correlation is significantly different from “Not Obese” group (p < 0.05).
  3. annon-obese = 29, nobese = 18.
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