Comparison of demographic characteristics of patients who underwent hip- or knee-replacement surgery at an academic or community hospital
| Characteristic | Academic, n = 202 | Community, n = 269 | p value |
|---|---|---|---|
| Age, mean (SD) yr | 65.1 (11.5) | 68.3 (9.2) | 0.001 |
| Male sex, % | 59 | 64 | 0.18 |
| Comorbidity, mean (SD) no. | 1.1 (1.2) | 1.8 (1.5) | < 0.001 |
| Rheumatoid arthritis, % | 7.5 | 8.9 | 0.53 |
SD = standard deviation.