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Demographic characteristics
| Characteristics | Primary THA | Primary TKA | Revision THA | Revision TKA |
|---|---|---|---|---|
| Number of patients | 35,746 | 72,913 | 1205 | 1599 |
| Percent female | 64.7% | 65.2% | 63.3% | 62.5% |
| Percent white | 94.3% | 92.3% | 94.4% | 91.2% |
| Average age ± SD (years) | 74.8 ± 6.5 | 73.6 ± 5.8 | 73.8 ± 6.1 | 72.1 ± 5.3 |
