Table 1 Characteristics of participants with knee replacement and matched controls at ASPREE baseline
From: Functional outcomes following knee replacement in community-dwelling older adults
|  | Participants with knee replacement n = 889 | Age- and sex-matched controls n = 858 | P |
|---|---|---|---|
Age (matched), years | 77.4 (4.2) | 77.4 (4.2) | 0.94 |
Females, n (%) | 545 (61.3) | 529 (61.7) | 0.88 |
Education > 12 years, n (%) | 323 (36.3) | 357 (41.6) | 0.02 |
Body mass index, kg/m2 | 29.9 (4.9) | 27.8 (4.4) |  < 0.0001 |
Diabetes, n (%) | 85 (9.6) | 83 (9.7) | 0.94 |
Dyslipidemia, n (%) | 626 (70.4) | 584 (68.1) | 0.29 |
Hypertension, n (%) | 694 (78.1) | 652 (76.0) | 0.30 |
Chronic kidney disease, n (%) | 208 (25.3) | 224 (28.3) | 0.18 |
Cancer, n (%) | 166 (18.7) | 164 (19.1) | 0.35 |
Physical component summary score of SF-12 | 43.9 (9.6) | 47.6 (9.0) |  < 0.0001 |
Mental component summary score of SF-12 | 56.0 (7.6) | 55.8 (7.0) | 0.59 |
Physical function | 43.5 (10.4) | 47.3 (9.6) |  < 0.0001 |
Role physical | 47.1 (9.2) | 49.5 (8.3) |  < 0.0001 |
Bodily pain | 44.9 (10.5) | 49.2 (10.1) |  < 0.0001 |
General health | 50.4 (8.0) | 51.8 (7.6) | 0.0003 |
Vitality | 53.5 (8.5) | 54.8 (8.3) | 0.001 |
Social functioning | 52.8 (7.6) | 53.5 (7.3) | 0.04 |
Role emotional | 50.7 (8.1) | 51.4 (7.2) | 0.049 |
Mental health | 53.7 (8.3) | 54.9 (7.9) | 0.002 |
Gait speed, m/sec | 1.02 (0.22) | 1.03 (0.23) | 0.55 |