Table 2 Subject characteristics
|  | All subjects n  = 3,790 | Excluded subjects n  = 2,707 | Analyzed subjects n = 1,083 | Probability (p)-value |
|---|---|---|---|---|
Age, yrs: mean (95%CI) | 67.5 (58.4–76.5) | 66.9 (57.5–76.3) | 68.7 (60.9–76.5) |  < 0.0001 |
Age, yrs: |  < 0.0001 | |||
  < 65 | 1200 (31.6) | 938 (34.7) | 261 (24.1) |  |
 65–74 | 1640 (43.3) | 1085 (40.1) | 555 (51.2) |  |
  ≥ 75 | 950 (25.1) | 683 (25.2) | 267 (24.7) |  |
Gender: | 0.8707 | |||
 Male | 1560 (41.2) | 1112 (41.1) | 448 (41.4) |  |
 Female | 2230 (58.8) | 1595 (58.9) | 635 (58.6) |  |
BMI: | 0.2109 | |||
  < 18.5 | 98 (3.1) | 70 (3.4) | 28 (2.6) |  |
 18.5–24.9 | 1981 (63.6) | 1307 (64.3) | 674 (62.2) |  |
 25.0–29.9 | 921 (29.6) | 579 (28.5) | 342 (31.6) |  |
  ≥ 30 | 116 (3.7) | 77 (3.8) | 39 (3.6) |  |
Sleeping pill use: | 0.0326 | |||
 Absence | 3231 (86.3) | 2317 (87.1) | 914 (84.4) |  |
 Presence | 513 (13.7) | 344 (12.9) | 169 (15.6) |  |
Knee pain: |  < 0.0001 | |||
 No pain | 1155 (30.5) | 1378 (50.9) | 419 (38.7) |  |
 Mild pain | 425 (11.2) | 906 (33.5) | 419 (38.7) |  |
 Moderate pain | 196 (5.2) | 268 (9.9) | 157 (14.5) |  |
 Severe pain | 47 (1.2) | 155 (5.7) | 88 (8.1) |  |
Knee crepitus | 0.0048 | |||
 Absence | 3139 (87.3) | 1776 (73.4) | 745 (68.8) |  |
 Presence | 455 (12.7) | 642 (26.6) | 338 (31.2) |  |
CESD-10: | 0.1318 | |||
 Not depressive | 3139 (87.3) | 2207 (87.9) | 932 (86.1) |  |
 Depressive | 455 (12.7) | 304 (12.1) | 151 (13.9) |  |
TUG: |  < 0.0001 | |||
 Normal mobility | 2978 (84.4) | 2025 (82.9) | 953 (88.0) |  |
 Decreased mobility | 549 (15.6) | 419 (17.1) | 130 (12.0) |  |
OLST: | 0.9602 | |||
 Normal balance | 2923 (83.6) | 2017 (83.6) | 906 (83.7) |  |
 Balance disability | 573 (16.4) | 396 (16.4) | 177 (16.3) |  |
Fall history: | 0.0027 | |||
 No fall | 3127 (83.4) | 2255 (84.6) | 872 (80.5) |  |
 Positive fall experience | 622 (16.6) | 411 (15.4) | 211 (19.5) |  |