Patient demographic characteristics by femoral component material
| Characteristic | Material; no. (%) of implants* | p value | |
|---|---|---|---|
| Cobalt–chromium n = 2286 | Oxidized zirconium n = 529 | ||
| Female sex | 1483 (83.4) | 296 (16.6) | < 0.001 |
| Male sex | 803 (77.5) | 233 (22.5) | |
| Age, yr, mean ± SD | 67.4 ± 9.4 | 52.3 ± 7.5 | < 0.001 |
| Body mass index, mean ± SD | 35.0 ± 9.0 | 34.3 ± 8.3 | 0.1 |
SD = standard deviation.
↵* Except where noted otherwise.