Hazard ratios (HRs) and 95% confidence intervals (CIs) of osteoarthritis associated with finishing time.

aAdjusted for age (continuous), gender, education (low, medium, high) and occupation (blue-collar, lower-middle white-collar, high white-collar and entrepreneur).bAdjusted for all variables in the model a and, in addition, the following diagnoses: any fracture, any acute injury, any chronic injury, any distortion, any dislocation, any contusion, any neurologic disease, infectious arthritis, diabetes mellitus, and any other endocrine disorder.