Association between two definitions of radiographic hip osteoarthritis and hip pain, stratified for sex and age
| Men | Women | Total | ||||
|---|---|---|---|---|---|---|
| Younger | Older | Younger | Older | Younger | Older | |
| Associations are presented as odds ratios (95% confidence intervals in parentheses). Men and women are divided in two equal groups, a younger and an older, divided by the median age (65.2 years). Associations are adjusted for body mass index and radiographic osteoarthritis of the other hip. | ||||||
| *48 cases with radiographic hip osteoarthritis according to Kellgren and Lawrence5; only one of these reported hip pain. | ||||||
| Median age (years) | 60.8 (n = 776) | 70.1 (n = 723) | 60.5 (n = 1016) | 71.1 (n = 1070) | 60.6 (n = 1792) | 70.6 (n = 1793) |
| Kellgren | ||||||
| ⩾grade 2 | 0.3* (0.0 to 1.9) | 3.7 (1.7 to 7.9) | 4.0 (2.0 to 8.2) | 3.2 (1.9 to 5.3) | 1.7 (1.0 to 3.2) | 3.2 (2.1 to 4.9) |
| Proportion with hip pain (%) | 2.1 | 16.9 | 36.1 | 31.7 | 16.7 | 25.5 |
| MJS | ||||||
| ⩽2.5 mm | 1.6 (0.5 to 4.7) | 4.1 (1.9 to 8.8) | 2.2 (1.1 to 4.2) | 2.3 (1.4 to 3.8) | 2.0 (1.2 to 3.5) | 2.7 (1.8 to 4.2) |
| Proportion with hip pain (%) | 10.8 | 17.9 | 23.6 | 25.5 | 18.5 | 22.7 |