Table 3.
Predictive factors for perceived disability due to dizziness at 6 months.
| Univariable regression analyses with perceived disability at 6 months as the dependent variable | ||||
|---|---|---|---|---|
| Independent variable | R 2 | Intercept (a) | Slope (b) | Level of significance |
| Age | 0.032 | 3.022 | 0.302 | p = 0.153 |
| Sex | 0.031 | 14.357 | 6.590 | p = 0.155 |
| Koos classification | 0.009 | 23.017 | −2.072 | p = 0.438 |
| Preoperative vestibular function (LA) | 0.022 | 21.764 | −0.101 | p = 0.324 |
| Preoperative vestibular function (VOR gain) | 0.010 | 21.374 | −8.017 | p = 0.484 |
| Preoperative vestibular function (VOR phase) | 0.001 | 18.951 | −0.053 | p = 0.799 |
| Treatment group | 0.008 | 20.130 | −2.384 | p = 0.494 |
| Standing Balance Performance* | 0.109 | 35.984 | −0.321 | p = 0.009* |
| Timed Up and Go test* | 0.110 | −20.795 | 4.929 | p = 0.008* |
| Subjective level of physical activity* | 0.166 | 47.961 | −0.404 | p = 0.005* |
| Multiple regression analysis with perceived disability at 6 months as the dependent variable | ||||
| Model | R 2 | F x,y | Level of significance | |
| Model after elimination with two variables* | 0.239 | F2,42 = 6.581 | p = 0.003* | |
| Independent variable | Intercept (a) | Slope (b) | Level of significance | |
| Timed Up and Go test | −1.836 | 5.173 | p = 0.052 | |
| Subjective level of physical activity | −0.268 | p = 0.081 | ||
Perceived disability = DHI-score at 6 months, R2 = explained variance of the dependent variable, intercept (a) and slope/regression-coefficient (b) in regression formula: Y (DHI-score) = a + bX(independent variable).
LA, labyrinthine asymmetry; VOR, Vestibulo-Ocular Reflex; F, ratio of the mean regression sum of squares divided by the mean error sum of squares; x/y, degrees of freedom.
*
Significant result (p < 0.05).