Table 3.

Multivariate Linear Regression.

	K-L Grade		WOMAC Pain Index		WOMAC Function Index		WOMAC Total Index
	β	P	β	P	β	P	β	P
Age	−0.073	0.334	−0.047	0.605	−0.027	0.950	−0.023	0.894
BMI	0.130	0.122	0.116	0.140	0.177	0.088	0.170	0.902
SF eotaxin-1	1.222	0.001	1.154	0.002	1.173	0.002	1.068	0.045

BMI = body mass index; K-L = Kellgren-Lawrence; SF = synovial fluid; WOMAC = Western Ontario and McMaster Universities Arthritis Index.