Age, sex, and knee pain standardised prevalence estimates
| Definition | Women | Men | Both sexes | |||
|---|---|---|---|---|---|---|
| Community (n = 1085) | Siblings (n = 423) | Community (n = 644) | Siblings (n = 314) | Community (n = 1729) | Siblings (n = 737) | |
| Results are shown as percentage (95% CIs). | ||||||
| TF OA, tibiofemoral OA; PF OA, patellofemoral OA. | ||||||
| TF OA | 6.4 | 13.9 | 9.5 | 20.0 | 7.9 | 16.8 |
| (4.9 to 7.9) | (10.6 to 17.2) | (7.2 to 11.8) | (15.6 to 24.4) | (6.6 to 9.2) | (14.1 to 19.5) | |
| Moderate-severe TF OA | 3.0 | 5.7 | 3.6 | 9.3 | 3.3 | 7.4 |
| (2.0 to 4.0) | (3.5 to 7.9) | (2.2 to 5.0) | (6.1 to 12.5) | (2.5 to 4.1) | (5.5 to 9.3) | |
| Bilateral TF OA | 3.6 | 6.2 | 4.5 | 8.8 | 4.0 | 7.4 |
| (2.5 to 4.7) | (3.9 to 8.5) | (2.9 to 6.1) | (5.7 to 11.9) | (3.1 to 4.9) | (5.5 to 9.3) | |
| PF OA | 11.2 | 18.8 | 10.4 | 16.9 | 10.8 | 17.9 |
| (9.3 to 13.1) | (15.1 to 22.5) | (8.0 to 12.8) | (12.8 to 21.0) | (9.3 to 12.3) | (15.1 to 20.7) | |
| Moderate-severe PF OA | 5.3 | 8.8 | 4.3 | 3.5 | 4.8 | 6.3 |
| (4.0 to 6.6) | (6.1 to 11.5) | (2.7 to 5.9) | (1.5 to 5.5) | (3.8 to 5.8) | (4.6 to 8.0) | |
| Bilateral PF OA | 4.2 | 8.6 | 4.1 | 4.6 | 4.2 | 6.7 |
| (3.0 to 5.4) | (5.9 to 11.3) | (2.6 to 5.6) | (2.3 to 6.9) | (3.3 to 5.2) | (4.9 to 8.5) | |
| OA any knee site | 13.7 | 29.7 | 14.7 | 29.1 | 14.2 | 29.5 |
| (11.7 to 15.8) | (25.4 to 34.1) | (12.0 to 17.4) | (24.1 to 34.1) | (12.6 to 15.9) | (26.2 to 32.8) | |