| Sex, % (n) |
|
| Male |
27.5 (11) |
| Female |
72.5 (29) |
| Age, years, mean (SD) |
65.0 (8.8) |
| Race, % (n) |
|
| Black |
42.5 (17) |
| White |
55.0 (22) |
| Other |
2.5 (1) |
| Insurance type, % (n) |
|
| Private |
35.0 (14) |
| Medicare |
20.0 (8) |
| Medicaid |
17.5 (7) |
| Medicare Advantage |
25.0 (10) |
| Others |
2.5 (1) |
| Kellgren-Lawrence grade, % (n) |
|
| 3 |
22.5 (9) |
| 4 |
77.5 (31) |
| Laterality, % (n) |
|
| Right |
55.0 (22) |
| Left |
45.0 (18) |
| Body mass index, kg/m2, mean (SD) |
34.4 (6.1) |
| Charlson comorbidity index, mean (SD) |
2.8 (1.6) |