Table 2.
The cumulative incidence of falls in the 1, 6, and 12 months after discharge.
| Factors | Cumulative incidence of falls (95% CI), % |
χ2 | P | |||
|---|---|---|---|---|---|---|
| 1 month | 6 month | 12 month | ||||
| Total falls | 4.45 (3.41, 5.81) | 9.03 (7.38, 11.06) | 10.80 (9.01, 12.94) | |||
| Depression | No | 1.55 (1.00, 2.40) | 3.49 (2.42, 5.04) | 4.42 (3.17, 6.18) | 209.007 | <0.001 |
| Yes | 26.19 (21.07, 32.56) | 49.93 (42.52, 58.62) | 58.53 (50.53, 67.79) | |||
| Length of hospital stay (days) | <10a | 3.72 (2.69, 5.15) | 7.62 (5.68, 10.22) | 9.10 (7.07, 11.72) | 19.691 | <0.001(a, b < c) |
| 10–19b | 3.74 (2.59, 5.40) | 7.65 (5.56, 10.51) | 9.14 (6.54, 12.76) | |||
| ≥20c | 9.63 (6.57, 14.13) | 19.06 (12.90, 28.16) | 22.49 (16.37, 30.90) | |||
| BI score | >90a | 2.72 (1.53, 4.84) | 5.60 (3.23, 9.73) | 6.71 (3.77, 11.93) | 50.002 | <0.001(a, b < c) |
| 81–90b | 3.47 (2.53, 4.74) | 7.12 (5.72, 8.86) | 8.51 (6.85, 10.57) | |||
| 61–80c | 13.26 (9.24, 19.02) | 25.76 (20.11, 33.00) | 30.14 (23.47, 38.70) | |||
| Re-hospitalization | No | 3.22 (2.40, 4.32) | 6.60 (5.07, 8.58) | 7.92 (6.18, 10.14) | 21.880 | <0.001 |
| Yes | 7.78 (5.68, 10.65) | 15.54 (12.29, 19.64) | 18.46 (14.23, 23.94) | |||
| Sex | Male | 4.53 (3.27, 6.26) | 9.19 (6.99, 12.06) | 10.98 (8.74, 13.79) | 0.036 | 0.849 |
| Female | 4.37 (3.20, 5.95) | 8.87 (6.53, 12.06) | 10.61 (8.27, 13.61) | |||
| Age(years) | 65–69 | 3.74 (2.60, 5.40) | 7.63 (5.34, 10.90) | 9.14 (6.16, 13.54) | 2.879 | 0.237 |
| 70–79 | 4.38 (3.10, 6.20) | 8.90 (6.78, 11.70) | 10.65 (8.09, 14.00) | |||
| ≥80 | 5.71 (3.77, 8.65) | 11.51 (8.34, 15.88) | 13.72 (9.49, 19.85) | |||
| Education | Illiterate and primary school | 3.04 (2.01, 4.61) | 6.23 (4.47, 8.68) | 7.47 (5.70, 9.79) | 8.889 | 0.003 |
| Middle school and above | 5.60 (4.12,7.60) | 11.30 (8.89,14.37) | 13.48 (10.85,16.75) | |||
| Living care | Alone | 6.03 (4.65, 7.83) | 12.23 (9.85, 15.19) | 14.68 (11.96, 18.02) | 14.567 | <0.001 |
| With others | 2.73 (1.83, 4.08) | 5.64 (3.99,7.96) | 6.82 (4.95, 9.40) | |||
| Living arrangement | Self-care | 4.17 (3.19, 5.45) | 8.49 (6.85, 10.53) | 10.17 (8.71, 11.88) | 9.326 | 0.002 |
| Cared by others | 10.27 (6.17, 17.10) | 20.22 (11.90, 34.38) | 23.90 (15.34, 37.25) | |||
| Fall risk | No | 2.32 (1.50, 3.57) | 4.74 (3.26, 6.89) | 5.66 (4.00, 8.00) | 30.246 | <0.001 |
| Yes | 7.25 (5.47, 9.62) | 14.45 (11.77, 17.73) | 17.06 (13.77, 21.13) | |||
| Frail | Robusta | 1.65 (0.83, 3.31) | 3.62 (1.78, 7.40) | 4.47 (2.30, 8.69) | 169.907 | <0.001(a, b < c) |
| Pre-frailb | 1.82 (1.18, 2.82)b | 4.00 (2.87, 5.57) | 4.93 (3.55, 6.84) | |||
| Frailc | 21.59 (17.15, 27.17) | 41.67 (34.19, 50.79) | 48.73 (40.40, 58.77) | |||
| Number of discharge medications | 1–3 | 4.93 (3.41,7.12) | 9.97 (7.40,13.44) | 11.90 (9.48,14.95) | 1.663 | 0.435 |
| 4–6 | 4.39 (3.09, 6.24) | 8.92 (6.61, 12.03) | 10.66 (8.24, 13.77) | |||
| >6 | 3.20 (1.64, 6.23) | 6.54 (3.44, 12.42) | 7.83 (4.27, 14.38) | |||
| Number of discharge diseases | 1–5 | 3.70 (2.45, 5.57) | 7.57 (5.50, 10.41) | 9.09 (6.97, 11.86) | 3.177 | 0.204 |
| 6–10 | 4.50 (3.07, 6.60) | 9.17 (6.53, 12.87) | 11.00 (7.67, 15.76) | |||
| >10 | 5.48 (3.79, 7.93) | 11.11 (7.92, 15.57) | 13.30 (10.18, 17.37) | |||
Note: a, b, c Cumulative incidence of falls with the different letter are significantly different, and adjusted P value by the Bonferroni method in Gray’s test. CI = confidence interval.