Variablea,b | Total (N = 663) | Social robustness (N = 414) | Social prefrailty (N = 207) | Social frailty (N = 42) | P value* |
---|---|---|---|---|---|
Age, years | 69.5 (4.5) | 69.3 (4.5) | 69.9 (4.5) | 68.9 (4.1) | 0.65 |
Sex, N (%) | |||||
 Men | 287 (43.3) | 192 (46.4) | 91 (44.0) | 4 (9.5) | < 0.01 |
 Women | 376 (56.7) | 222 (53.6) | 116 (56.0) | 38 (90.5) |  |
Educational level, N (%) | |||||
  ≤ 9 years | 38 (5.7) | 19 (4.6) | 13 (6.3) | 6 (14.3) | 0.01 |
 10–12 years | 305 (46.0) | 178 (43.0) | 107 (51.7) | 20 (47.6) |  |
  > 12 years | 320 (48.3) | 217 (52.4) | 87 (42.0) | 16 (38.1) |  |
Economic status, N (%) | |||||
 Need support | 11 (1.7) | 0 (0) | 4 (1.9) | 7 (16.7) | < 0.01 |
 Self-supporting | 538 (81.1) | 335 (80.9) | 174 (84.1) | 29 (69.0) |  |
 Well off | 114 (17.2) | 79 (19.1) | 29 (14.0) | 6 (14.3) |  |
 BMI, kg/m2 | 22.6 (2.8) | 22.6 (2.7) | 22.4 (2.7) | 21.7 (2.4) | 0.03 |
 CCI, scores | 3.2 (1.2) | 3.2 (1.2) | 3.3 (1.2) | 3.1 (1.2) | 0.49 |
 MNA, scores | 26.1 (2.3) | 26.3 (2.2) | 25.7 (2.3) | 25.1 (2.2) | < 0.01 |
 GDS-15, scores | 2.2 (2.7) | 1.6 (2.0) | 3.1 (3.3) | 4.1 (3.2) | < 0.01 |
 Physical activity (BAQ), scores | 7.6 (1.3) | 7.8 (1.2) | 7.4 (1.3) | 6.6 (1.2) | < 0.01 |
 Usual walking speed, m/s | 1.4 (0.2) | 1.4 (0.2) | 1.4 (0.2) | 1.4 (0.2) | 0.80 |
 Composite IC score | 0.1 (0.4) | 0.1 (0.4) | −0.1 (0.5) | − 0.2 (0.4) | < 0.01 |
 Locomotion domain score | 0.1 (1.0) | 0.1 (0.9) | −0.1 (1.0) | 0.1 (1.0) | 0.80 |
 Cognition domain score | 0.2 (0.7) | 0.2 (0.7) | 0.2 (0.7) | 0.3 (0.8) | 0.43 |
 Psychological function domain score | −0.1 (1.0) | 0.2 (0.8) | −0.3 (1.2) | − 0.7 (1.2) | < 0.01 |
 Vitality domain score | −0.1 (1.0) | 0.1 (0.8) | −0.1 (0.8) | − 0.5 (0.6) | < 0.01 |
 Sensory function domain score | 0.1 (1.0) | −0.1 (1.0) | 0.1 (1.1) | −0.1 (0.9) | 0.98 |