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Baseline clinical and demographic characteristics.
| Characteristic | Data |
|---|---|
| Patients, n | 398 |
| Mean age, yrs (SD) | 65.1 (11.6) |
| Sex, n | |
| Male | 68 |
| Female | 330 |
| Preoperative diagnosis, n | |
| DDH-OA | 308 |
| Osteonecrosis of the femoral head | 48 |
| Primary OA | 17 |
| Rapidly destructive coxarthrosis, a rare syndrome that typically involves the rapid and aggressive destruction of the unilateral hip joint | 15 |
| Rheumatoid arthritis | 7 |
| Others | 3 |
DDH, developmental dysplasia of the hip; OA, osteoarthritis; SD, standard deviation.
