Table 3.
23 factorial design (interventional components fully randomized)
| Factor combination |
Manual dexterity impairment |
Chair lift impairment |
Depression | Number of data points |
Estimated effect contribution [1,2] |
|---|---|---|---|---|---|
| 1 | 0 | 0 | 0 | 40 | All |
| 2 | 0 | 0 | 1 | 40 | All |
| 3 | 0 | 1 | 0 | 40 | All |
| 4 | 0 | 1 | 1 | 40 | All |
| 5 | 1 | 0 | 0 | 40 | All |
| 6 | 1 | 0 | 1 | 40 | All |
| 7 | 1 | 1 | 0 | 40 | All |
| 8 | 1 | 1 | 1 | 40 | All |
| Total data points = 320 | |||||
|
Estimated bootstrap effect (95% CI)3 |
Hand skill impairment 0.28 (−0.05, 0.60) |
Chair lift impairment 0.38 (0.05, 0.75) |
Depression 0.40 (0.05, 0.79) |
Net Intervention 0.23 (−0.43, 1.08) |
1
Estimates from Poisson regression on number of falls in 3 years with fixed offset.
2
All includes effects for net intervention and individual components for hand, chair, and depression.
3
Bootstrap estimates based on 1000 re-samplings of non-missing values of original data set.