Factors associated with number of falls in the univariate analysis, number (%) unless otherwise indicated
| Characteristic | 0 fall (n=1152) (n (%)) | 1 fall (n=111) (n (%)) | 2 falls (n=17) (n (%)) | ≥3 falls (n=10) (n (%)) | IRR | 95% CI | P value |
| Female gender | 644 (56) | 83 (75) | 9 (53) | 4 (40) | 1.35 | 0.94 to 1.95 | 0.1 |
| Age (years) | |||||||
| 60–69 | 743 (64) | 61 (55) | 9 (53) | 2 (20) | 1.55 | 1.19 to 2.03 | <0.01 |
| 70–79 | 337 (29) | 42 (38) | 6 (35) | 6 (60) | |||
| 80+ | 72 (63) | 8 (7) | 2 (12) | 2 (20) | |||
| Education | |||||||
| Illiteracy | 69 (6) | 12 (11%) | 0 | 0 | 1.10 | 0.95 to 1.27 | 0.19 |
| Primary | 195 (17) | 22 (20) | 2 (12) | 1 (10) | |||
| Middle | 296 (26) | 20 (18) | 3 (18) | 1 (10) | |||
| High | 310 (27) | 27 (24) | 8 (47) | 2 (20) | |||
| College+ | 283 (25) | 30 (27) | 4 (24) | 5 (50) | |||
| Living alone | 24 (2) | 5 (5) | 3 (18) | 0 | 2.64 | 1.12 to 6.22 | 0.03 |
| Number of medical conditions | |||||||
| 0 | 366 (32) | 21 (19) | 3 (18) | 1 (10) | 1.57 | 1.34 to 1.85 | <0.01 |
| 1 | 407 (35) | 32 (29) | 1 (6) | 4 (40) | |||
| 2 | 222 (19) | 30 (27) | 6 (35) | 0 | |||
| ≥3 | 157 (14) | 28 (25) | 7 (41) | 5 (50) | |||
| Number of medications | |||||||
| 0 | 642 (56) | 50 (45) | 7 (41) | 4 (40) | 1.38 | 1.07 to 1.78 | 0.01 |
| 1 | 413 (36) | 51 (46) | 7 (41) | 4 (40) | |||
| 2 | 92 (8) | 9 (8) | 3 (18) | 2 (20) | |||
| 3 | 5 (0.4) | 1 (1) | 0 | 0 | |||
| Visual impairment | 383 (33) | 54 (49) | 8 (47) | 4 (40) | 1.65 | 1.16 to 2.36 | 0.01 |
| Hearing impairment | 173 (15) | 24 (22) | 3 (18) | 2 (20) | 1.39 | 0.89 to 2.19 | 0.15 |
| Poor subjective body sense perception | 370 (32) | 58 (52) | 11 (65) | 6 (60) | 2.42 | 1.70 to 3.43 | <0.01 |
| Low mood | 276 (24) | 35 (32) | 6 (35) | 5 (50) | 1.65 | 1.13 to 2.41 | 0.01 |
| Walking aid use | 29 (3) | 10 (9) | 3 (18) | 4 (40) | 5.15 | 2.84 to 9.36 | <0.01 |
| Nocturia | 267 (23) | 29 (26) | 6 (35) | 4 (40) | 1.40 | 0.94 to 2.07 | 0.10 |
| Poor self-rated health | 700 (61) | 82 (74) | 12 (71) | 7 (70) | 1.62 | 1.10 to 2.37 | 0.01 |
| Balance impairment, mean (SD) | 1.51 (3.2) | 3.50 (5.5) | 3.76 (6.4) | 5.70 (4.19) | 1.11 | 1.07 to 1.15 | <0.01 |
College+ is at college level and above. Balance impairment was scored by balance test, the score ranges from 0 to 24. Higher score associated with worse balance.