Table 3.

The effect of baseline knee extensor strength and mean joint position sense (JPS) on incident radiographic 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	20/278 (7.2)	0.91 (0.44, 1.89)
High/Middle	12/242 (5.0)	0.57 (0.25, 1.30)
High/Low	17/244 (7.0)	1.02 (0.48, 2.17)
Middle/High	14/244 (5.7)	0.79 (0.37, 1.71)
Middle/Middle	17/266 (6.4)	0.87 (0.42, 1.81)
Middle/Low	18/247 (7.3)	1.03 (0.51, 2.08)
Low/High	17/252 (6.8)	0.96 (0.48, 1.95)
Low/Middle	26/237 (11.0)	1.60 (0.82, 3.11)
Low/Low	18/266 (6.8)	Referent

OR: odds ratio

CI: confidence interval