Table 3.
Association of combinations of baseline knee buckling and knee shifing/slipping with falls at 60 months and at 84 months
| Baseline exposure/predictor (n) | a. Cross-sectional association with falls in the past 12 months at baseline* | ||||
|---|---|---|---|---|---|
| Buckling and instability/slipping past 3 months (n) | 0 falls | 1 fall | ≥2 falls | ||
| N (%) | N (%) | OR (95% CI)* | N (%) | OR (95% CI)* | |
| Neither (1218) | 901 (74.0) | 163 (13.4) | Ref -- | 154 (12.6) | Ref -- |
| Shifting/slipping only (314) | 213 (67.8) | 48 (15.3) | 1.16 (0.78-1.71) | 53 (16.9) | 1.21 (0.82-1.78) |
| Buckling only (147) | 93 (63.3) | 25 (17.0) | 1.39 (0.84-2.30) | 29 (19.7) | 1.54 (0.94-2.52) |
| Buckling and shifting/slipping (163) | 82 (50.3) | 20 (12.3) | 1.23(0.69-2.18) | 61 (37.4) | 2.83 (1.80-4.46) |
| Buckling and instability/slipping past 3 months (n) | b. Longitudinal association with falls in past 12 months at 2 year follow-up† | ||||
|---|---|---|---|---|---|
| 0 falls | 1 fall | ≥2 falls | |||
| Neither (1146) | 860 (75.0) | 149 (13.0) | Ref -- | 137 (12.0) | Ref -- |
| Shifting/slipping only (281) | 206 (73.3) | 41 (14.6) | 1.00 (0.66-1.52) | 34 (12.1) | 0.87 (0.55-1.38) |
| Buckling only (130) | 80 (61.5) | 20 (15.4) | 1.40 (0.81-2.43) | 30 (23.1) | 2.10 (1.26-3.49) |
| Buckling and shifting/slipping (140) | 88 (62.9) | 14 (10.0) | 0.71 (0.37-1.37) | 38 (27.1) | 1.69 (1.00-2.86) |
*
See footnote to Table 2 for variables included in models.
†
84 month clinic visit and telephone contact