Table 1.
Clinical and demographic characteristics—all participants undergoing total hip or knee replacement
| Total hip replacement (N=63 162) |
Total knee replacement (N=54 276) |
|||
|---|---|---|---|---|
| Female (N=39 292) | Male (N=23 870) | Female (N=31 682) | Male (N=22 594) | |
| Age (mean, SD) | 70.5 (11.1) | 67.7 (11.0) | 70.7 (9.6) | 69.4 (9.4) |
| Gender (%) | 62.2 | 37.8 | 58.3 | 41.6 |
| BMI (mean, SD) | 27.2 (5.1) | 27.7 (4.3) | 29.6 (5.6) | 28.8 (4.4) |
| Missing BMI (%) | 19.1 | 19.3 | 13.8 | 14.0 |
| Revisions (N, %) | 1000 (2.55) | 811 (3.40) | 572 (1.8) | 614 (2.7) |
| Deaths prerevision (N, %) | 6615 (16.8) | 4201 (17.6) | 4110 (13.0) | 3349 (14.8) |
| Number of comorbid conditions (%) | ||||
| 0 | 42.8 | 48.1 | 37.5 | 43.7 |
| 1 | 34.2 | 31.0 | 37.4 | 35.8 |
| 2+ | 23.0 | 20.9 | 25.2 | 20.6 |
BMI, body mass index.