Table 1.
Demographic characteristics of the 117,903 patients undergoing primary TKA
| Demographic characteristic | Total number | Percent | Total number with revision | Percent |
|---|---|---|---|---|
| Sex | ||||
| Female | 76,914 | 65.2 | 747 | 60.8 |
| Male | 40,989 | 34.8 | 481 | 39.2 |
| Race | ||||
| White | 108,682 | 92.2 | 1,107 | 90.2 |
| Black | 5931 | 5.0 | 81 | 6.6 |
| Others | 3290 | 2.8 | 40 | 3.3 |
| Age (years) | ||||
| 65–69 | 30,957 | 26.3 | 377 | 30.7 |
| 70–74 | 35,250 | 29.9 | 361 | 29.4 |
| 75–79 | 30,074 | 25.5 | 300 | 24.4 |
| 80–84 | 16,237 | 13.8 | 153 | 12.5 |
| ≥ 85 | 5385 | 4.6 | 37 | 3.0 |
| Region | ||||
| Midwest | 36,009 | 30.5 | 368 | 30.0 |
| Northeast | 18,746 | 15.9 | 172 | 14.0 |
| South | 44,583 | 37.8 | 483 | 39.3 |
| West | 18,565 | 15.7 | 205 | 16.7 |
| Public assistance status | ||||
| Public assistance | 10,111 | 8.6 | 123 | 10.0 |
| No public assistance | 107,792 | 91.4 | 1,105 | 90.0 |
| Charlson index | ||||
| 0 | 40,769 | 34.6 | 354 | 28.8 |
| 1–2 | 51,994 | 44.1 | 555 | 45.2 |
| 3–4 | 18,819 | 16.0 | 232 | 18.9 |
| ≥ 5 | 6321 | 5.4 | 87 | 7.1 |