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Table 4 R-squared values, and corresponding F-tests in various models that evaluated the explanatory ability of body composition parameters towards Lp-PLA2 activity.

From: Lipoprotein-associated phospholipase A2 (Lp-PLA2) activity, platelet-activating factor acetylhydrolase (PAF-AH) in leukocytes and body composition in healthy adults

Initial model:

R2

F

P

LDL-cholesterol, age, smoking, physical activity

0.296

4.098

0.007

Additive models (initial + one of the following variables):

R 2 change*

F

P

DXA ROI fat

0.136

9.076

0.005

Arms fat

0.118

7.678

0.009

Trunk fat

0.114

7.316

0.010

Total body fat

0.084

5.152

0.029

  1. ROI: Region of interest; DXA: dual energy X-ray absorptiometry.
  2. The other anthropometric variables tested did not have a significant additive explanatory effect on Lp-PLA2 activity.
  3. * The change in R-squared values between the additive and the initial models.