Table 2.
Logistic regression analysis of the 1stFall risk groups against occurrence of a fall in Ontario, Manitoba, Alberta and British Colombia (validation samples)
| Ontario (n = 38,013) | Manitoba (n = 2739) | Alberta (n = 1226) | British Columbia (n = 9568) | |||||
|---|---|---|---|---|---|---|---|---|
| Risk group defined by 1stFall | OR (95% CI) | N (%) | OR (95% CI) | N (%) | OR (95% CI) | N (%) | OR (95% CI) | N (%) |
| 1 (reference) | – | 1548 (4.07) | – | 56 (2.05) | – | 19 (1.55) | – | 279 (2.92) |
| 2 | 1.56 (1.29–1.87) | 10,037 (26.40) | 5.56 (1.34–23.12) | 656 (23.96) | 1.84 (0.41–8.24) | 264 (21.53) | 1.02 (0.73–1.44) | 1448 (15.14) |
| 3 | 2.20 (1.83–2.64) | 12,633 (33.23) | 6.23 (1.51–25.75) | 1125 (41.09) | 2.45 (0.56–10.75) | 523 (42.66) | 1.49 (1.08–2.06) | 3665 (38.31) |
| 4 | 3.10 (2.58–3.72) | 9365 (24.64) | 7.54 (1.82–31.28) | 646 (23.59) | 3.48 (0.79–15.36) | 310 (25.29) | 2.01 (1.45–2.78) | 2847 (29.76) |
| 5 | 4.02 (3.33–4.86) | 4078 (10.73) | 8.31 (1.96–35.23) | 221 (8.07) | 4.19 (0.92–19.15) | 106 (8.65) | 2.41 (1.72–3.38) | 1179 (12.32) |
| 6 | 6.28 (4.75–8.30) | 352 (0.93) | 9.72 (1.96–48.30) | 34 (1.24) | 8.50 (0.74–98.18) | 4 (0.33) | 3.27 (2.08–5.16) | 148 (1.55) |
| c-statistic | 0.60 | 0.55 | 0.58 | 0.58 | ||||
OR: Odds ratio, CI: Confidence Interv