Interval-specific HRs and RDs for injured versus uninjured persons on the risk for knee OA
| HR (95% CI) Follow-up to 11 years | HR (95% CI) Follow-up 12–19 years | RD (%) (95% CI) Follow-up to 19 years | |
| Injured versus uninjured* | 5.6 (4.9 to 6.4) | 2.7 (2.3 to 3.1) | 7.7 (6.4 to 9.1) |
| Injured versus uninjured† | 5.7 (5.0 to 6.6) | 3.4 (2.9 to 4.0) | 8.1 (6.7 to 9.4) |
| Subgroups | |||
| Men‡ | 5.3 (4.5 to 6.3) | 2.9 (2.3 to 3.6) | 7.3 (5.7 to 8.9) |
| Women‡ | 6.5 (5.1 to 8.1) | 4.1 (3.2 to 5.3) | 9.5 (6.9 to 12.1) |
| Age≤30 years† | 7.6 (6.2 to 9.3) | 4.8 (3.8 to 6.2) | 8.6 (6.9 to 10.4) |
| Age>30 years† | 4.7 (3.9 to 5.7) | 2.6 (2.0 to 3.2) | 8.0 (5.9 to 10.1) |
*Unadjusted.
†Adjusted for age at index visit, sex, residential area, education attainment, income, a diagnosis of diabetes (type I or II), obesity and hypertension and stratified on index year.
‡ Adjusted for age at index visit, residential area, education attainment, income, a diagnosis of diabetes (type I or II), obesity and hypertension and stratified on index year.
CI, Confidence Interval; HR, Hazard Ratio; OA, osteoarthritis; RD, risk difference.