. Author manuscript; available in PMC: 2009 Mar 1.

Published in final edited form as: Osteoarthritis Cartilage. 2007 Sep 20;16(3):367–372. doi: 10.1016/j.joca.2007.07.016

Table 4.

Comparison of two logistic models of the odds of having knee osteoarthritis in 483 women according to body composition measures (Model 1) and BMI (Model 2) using the AIC goodness of fit criterion

	Model 1		Model 2

	β coefficient (SE)	Odds Ratio (95% CI)	β coefficient (SE)	Odds Ratio (95% CI)

Age^* (years)	0.16 (0.043)	1.18 (1.1, 1.3)	0.15 (0.044)	1.16 (1.1, 1.3)
Body composition measures
_log(Fat mass) (kg)	2.08 (0.64)	8.02 (2.3, 28.1)
_log(Skeletal muscle mass) (kg)	6.17 (1.84)	476.99 (12.8, 17735.1)
_log(BMI) (kg/m²)			6.76 (1.28)	864.97 (70.5, 10617.9)
AIC goodness of fit measure
(smaller is better)	545.7		548.7

Age is grand-mean centered at 41.5 years.

^†

Statistically significant individual predictors at P < 0.05 are shown in bold.