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

Published in final edited form as: Osteoarthritis Cartilage. 2008 Mar 24;16(9):1047–1053. doi: 10.1016/j.joca.2008.02.002

Table 4.

Correlation of baseline biomarker levels with baseline outcome measures, r (p value)

Outcomes	HA	AgKS	COMP	TGF-β1
WEIGHT	0.05 (.49)	0.04 (.60)	−0.08 (.29)	0.02 (.78)
WOMC function	0.12 (.11)	−0.03 (.67)	−0.07 (.36)	−0.14 (.07)
WOMC pain	0.09 (.21)	−0.12 (.10)	−0.04 (.62)	−0.09 (.22)
WOMC stiffness	0.11 (.12)	−0.07 (.36)	−0.08 (.31)	−0.08 (.30)
Distance walked	−0.02 (.78)	0.09 (.27)	0.15 (.06)	−0.03 (.71)
Stair climb time	0.05 (.54)	−0.13 (.07)	−0.11 (.14)	−0.09 (.22)
JSW lateral	−0.08 (.32)	0.11 (.14)	−0.13 (.10)	−0.13 (.10)
JSW medial	−0.23 (.004)	0.02 (.83)	−0.06 (.45)	0.07 (.38)
K-L score	0.35 (.0001)	0.06 (.46)	0.01 (.89)	−0.19 (.01)

HA = hyaluronan, AgKS = antigenic keratan sulfate, COMP = cartilage oligomeric protein, TGF-β1 = transforming growth factor- β1, JSW = joint space width. Values shown are correlation coefficients followed by p values in parentheses.