Cross-sectional relationship between steps/day and grade 2 cartilage defects.
| Study factor | Grade 2 Hip Cartilage Defects, PR (95% CI)* |
|---|---|
| Steps/day | 0.97 (0.96–0.99) |
| Steps/day categories | |
| 0–5000 steps | 1.00 |
| 5000–7499 steps | 0.90 (0.77–1.04) |
| 7500–9999 steps | 0.87 (0.74–1.01) |
| 10,000+ steps | 0.77 (0.65–0.91) |
Independent variable: steps per day and steps per day categories. Dependent variable: grade 2 hip cartilage defects.
↵* PR (95% CI) = prevalence ratios with 95% CI, adjusted for age residuals, sex, and body mass index and taking into account clustering of observations on subjects at phase 2 and phase 3.