Measures of acetabular dysplasia by presence of radiographic changes of hip OA (hip based analysis)
| Grade 2–4 (n=219) | Grade 0 (n=195) | OR (95% CI) | |
| Centre edge angle (mean°, SD) | 36.7 (7.6) | 35.4 (5.7)3-150 | NA |
| Centre edge angle <25° (%) | 9 (4.1%) | 5 (2.6%) | 1.43 (0.46, 4.46) |
| p=0.54 | |||
| Acetabular depth (mm, SD) | 12.2 (3.2) | 11.9 (2.5) | NA |
| Acetabular depth <9 mm | 28 (12.8%) | 18 (9.2%) | 1.47 (0.78, 2.77) |
| p=0.24 | |||
| Acetabular dysplasia | 32 (14.6%) | 22 (11.3%) | 1.33 (0.74, 2.40) |
| p=.034 |
↵3-150 P<0.05, t test compared with grade 2–4.