Table 2.

Association between METS-VF and osteoarthritis analyzed using logistic regression

Model	Quartiles of METS-VF				p for trend
	Q1	Q2	Q3	Q4
Model 1	1	2.15 (1.58−2.91)	3.07 (2.30−4.10)	3.90 (2.94−5.15)	< 0.01
Model 2	1	1.40 (1.02−1.94)	1.84 (1.35−2.51)	2.27 (1.67−3.08)	< 0.01
Model 3	1	1.43 (1.02−2.01)	1.93 (1.39−2.69)	2.33 (1.65−3.28)	< 0.01

Model 1:no covariates were adjusted

Model 2: adjusted for age and gender

Model 3: adjusted for age, gender, race, education level, poverty-to-income ratio, alcohol intake, smoking status, work intensity, recreational intensity, serum calcium level, vitamin D level, hypertension, diabetes, and coronary heart disease, energy