Table 2

Summary of regression and Bland-Altman analysis before and after weight-loss compared to DXA

Regression
 Bland-Altman

Intercept
 Slope
 R2
 SEE
 Bias
 95% Limits
 p Value
Before weight-loss
ADP %fat
 6.6671
 0.937
 0.845
 2.056
 -4.0123
 0.128 to 8.152
 0.648
After weight-loss (16 months)
ADP %fat
 4.9561
 0.969
 0.884
 2.183
 -3.7603
 0.600 to 8.120
 0.408
Δ (before – after weight-loss)
ADP %fat
 -0.6181
 0.902
 0.763
 2.182
 0.252
 -4.168 to 4.672
 0.665

1 Significantly different from 0 (p ≤ 0.05).

2 Significantly different from 1 (p ≤ 0.001).

3 Bland-Altman analysis bias is the mean difference between ADP and DXA (p ≤ 0.001) with the trend between DXA and ADP not significant at any time point (i.e. no bias between techniques was observed).

Minderico et al. Nutrition & Metabolism 2006 3:32   doi:10.1186/1743-7075-3-32