. Author manuscript; available in PMC: 2017 Mar 1.

Published in final edited form as: Osteoarthritis Cartilage. 2015 Oct 20;24(3):427–435. doi: 10.1016/j.joca.2015.10.001

Table 4.

Association of Unilateral Hip Pain and Discordant Radiographic Hip OA (RHOA) with Knee Joint Space Narrowing (JSN) Progression in the Contralateral vs. Ipsilateral Knee.

Outcome	Odds Ratio^* (95% CI) [p-value] for Outcomes in the Contralateral vs. Ipsilateral Knee^*
Outcome	Unilateral Hip Pain
Knee JSN Progression^#	Unadjusted	Adjusted for RHOA and knee K-L Grade
Knee JSN Progression^#	1.23 (0.93, 1.63) [0.140]	1.23 (0.92, 1.64) [0.167]
	Discordant for RHOA
Knee JSN Progression^#	Unadjusted	Adjusted for hip pain and knee K-L grade
Knee JSN Progression^#	0.97 (0.63, 0.149) [0.889]	1.24 (0.77, 1.99) [0.361]

Odds ratios and 95% confidence intervals (CI) estimated from logistic regression models.

^**

An individual’s contralateral and ipsilateral limbs are identified in relation to the limb with more severe RHOA or presence of hip pain.

Any increase in medial or lateral JSN score (including within grade increases) from baseline to 48 months.