Post Hoc Exploratory Analysis of Intervention Effectiveness by Age
| VSS-SF Total Score | Aged ≤67 Years | Aged >67 Years | ||||||
|---|---|---|---|---|---|---|---|---|
| Intervention, Median (IQR) | Usual Care, Median (IQR) | Univariate Difference, Median (95% CI)a | Multivariate Difference, Median (95% CI)b | Intervention, Median (IQR) | Usual Care, Median (IQR) | Univariate Difference, Median (95% CI)a | Multivariate Difference, Median (95% CI)b | |
| 6 months | 8 (4–15) | 9 (5–20) | 1.00 (−1.77 to 3.77; P = .48) | 1.08 (−1.66 to 3.82; P = .44) | 5 (1–12) | 6 (3–15) | 3.00 (0.14 to 5.86; P = .04) | NAc |
| 3 months | 8 (5–15) | 10 (6–19) | 2.79 (0.74 to 4.83; P = .008) | 3.03 (0.99 to 5.08; P = .004) | 6 (1–10) | 8 (4–12) | 3.19 (1.03 to 5.35; P = .004) | 3.33 (1.29 to 5.38; P = .002) |
IQR = interquartile range; VSS-SF = Vertigo Symptoms Scale–Short Form; NA = not applicable.
↵a Difference between groups controlling for baseline values and clustering.
↵b Difference between groups controlling for baseline value, clustering, and other significant covariates.
↵c No other covariates were significant.