Table 3.

Results from logistic regression analyses where runner status is the predictor and the longitudinal outcomes are KL worsening, medial JSN worsening, new frequent knee pain and improvement of frequent knee pain.

	Prevalence of Outcome	Unadjusted Odds Ratios	Adjusted Odds Ratios*
KL Worsening
Non-Runners	307/1603 (19.2%)	Referent	Referent
Runners	32/205 (15.6%)	0.8 (0.5 – 1.2)	0.9 (0.6 – 1.3)
Medial JSN Worsening
Non-Runners	378/1603 (23.6%)	Referent	Referent
Runners	40/205(19.5%)	0.8 (0.5 – 1.2)	0.8 (0.5 – 1.2)
New Frequent Knee Pain
Non-Runners	293/1009 (29.0%)	Referent	Referent
Runners	33/123 (26.8%)	0.8 (0.5 – 1.3)	0.9 (0.6 – 1.6)
Improvement of Frequent Knee Pain
Non-Runners	232/594 (39.1%)	Referent	Referent
Runners	41/82 (50.0%)	1.6 (1.0 – 2.6)	1.7 (1.0 – 2.8)

^*adjusted for age, sex, BMI, injury, ipsilateral baseline KL score, contralateral baseline KL score, and contralateral frequent knee pain