(a).
| Screened | Not screened | p | |
|---|---|---|---|
| n (%) | 2,291 (56.7%) | 1,751 (43.4%) | |
| Mean age (SD) | 63.8 (11.2) | 64.2 (12.0) | 0.24 |
| Gender, n (%) | 0.90 | ||
| Female | 1,352 (59%) | 1051 (60%) | |
| Male | 939 (41%) | 700 (40%) | |
| Joint, n (%) | 0.80 | ||
| Hips | 939 (41%) | 700 (40%) | |
| Knees | 1,352 (59%) | 1,051 (60%) | |
| Mean Charlson Comorbidity Index (SD) | 3.4 (1.7) | 3.7 (1.9) | <0.01 |
| Mean body mass index (SD) | 32.1 (7.2) | 31.9 (8.4) | 0.43 |
| Previous inpatient stay | |||
| 0-1 month, n (%) | 115 (5%) | 105 (6%) | 0.17 |
| 1-2 months, n (%) | 252 (11%) | 201 (12%) | 0.16 |
| 2-3 months, n (%) | 367 (16%) | 298 (17%) | 0.48 |
| 3–6 months, n (%) | 664 (29%) | 508 (29%) | 0.67 |
| 6–12 months, n (%) | 1,054 (46%) | 753 (43%) | 0.03 |