. Author manuscript; available in PMC: 2011 Nov 1.

Published in final edited form as: Med Sci Sports Exerc. 2010 Nov;42(11):2081–2088. doi: 10.1249/MSS.0b013e3181dd902e

Table 4.

The effect of baseline knee extensor strength and mean joint position sense (JPS) on incident symptomatic knee osteoarthritis

Knee Extensor Strength and JPS Categories (High/Middle/Low)	Cases/total N (%)	OR (95% CI) for outcome, adjusted for baseline age, BMI, knee injury, knee surgery, PASE, and sex
High/High	26/388 (6.7)	0.42 (0.25, 0.72)^*
High/Middle	21/344 (6.1)	0.36 (0.20, 0.66)^*
High/Low	21/320 (6.6)	0.46 (0.26, 0.82)^*
Middle/High	27/331 (8.2)	0.53 (0.32, 0.89)^*
Middle/Middle	20/384 (5.2)	0.37 (0.22, 0.63)^*
Middle/Low	29/345 (8.4)	0.50 (0.29, 0.86)^*
Low/High	47/344 (13.7)	0.87 (0.55, 1.38)
Low/Middle	52/337 (15.4)	1.01 (0.64, 1.58)
Low/Low	55/373 (14.8)	Referent

Significant predictor of incident symptomatic knee osteoarthritis

OR: odds ratio

CI: confidence interval