Table 2.

Correlation of SF Eotaxin-1 Levels With K-L Grade, WOMAC Index, and Biochemical Factors in Elderly Knee OA Patients Adjusted by Age and BMI.

	SF Eotaxin-1 Levels (pg/mL)		SF Eotaxin-1 Levels (pg/mL)a
Variables	r	P	r	P
BMI	0.092	>0.05	—	—
Age	0.144	>0.05	—	—
K-L grade	0.363	<0.001	0.310	0.009
WOMAC pain index	0.433	<0.001	0.378	<0.001
WOMAC stiffness index	>0.05	>0.05	—	—
WOMAC function index	0.430	<0.001	0.365	<0.001
WOMAC total index	0.395	<0.001	0.332	0.005
SF IL-6 levels	0.382	<0.001	0.327	0.004
SF MMP-3 levels	0.395	<0.001	0.334	0.005

BMI = body mass index; IL-6 = interleukin-6; K-L = Kellgren-Lawrence; MMP-3 = matrix metalloproteinase–3; OA = osteoarthritis; SD = standard deviation; SF = synovial fluid; WOMAC = Western Ontario and McMaster Universities Arthritis Index.

^aAdjusted by age and BMI.