Table 3.
Comparison of outcomes at one year follow-up
| Intervention (mean score (standard deviation), no) | Comparison (adjusted mean difference (95% CI), P)* | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Routine care | Booklet self management with telephone support | Booklet self management only | Routine care versus booklet self management with telephone support | Routine care versus booklet self management only | |||||
| Baseline | One year | Baseline | One year | Baseline | One year | ||||
| Vertigo symptom scale-short form | 13.8 (10.7), n=89 | 11.0 (8.7), n=89 | 13.4 (10.0), n=86 | 8.3 (8.5), n=86 | 11.8 (7.9), n=88 | 7.6 (6.2), n=88 | −2.52 (−4.52 to −0.51), P=0.014 | −2.43 (−4.27 to −0.60), P=0.010 | |
| Patients reporting subjective improvement | — | 47/99 (47%)† | — | 66/95 (69%)† | — | 60/100 (60%)† | 2.56 (1.41 to 4.66)‡, P=0.002 | 1.63 (0.93 to 2.87)‡, P=0.091 | |
| Vertigo balance subscale | 8.2 (6.6), n=89 | 5.7 (4.9), n=89 | 7.7 (6.7), n=86 | 4.6 (5.5), n=86 | 7.2 (5.5), n=88 | 4.3 (4.0), n=88 | −1.07 (−2.2 to 1.0), P=0.073 | −0.92 (−2.23 to 0.39), P=0.168 | |
| Autonomic anxiety subscale | 5.6 (5.1), n=89 | 5.3 (4.6), n=89 | 5.6 (4.8), n=86 | 3.6 (4.0), n=86 | 4.5 (3.7), n=88 | 3.3 (3.2), n=88 | −1.64 (−2.60 tο −0.68), P=0.001 | −1.38 (−2.31 tο −0.46) P=0.004 | |
| Dizziness handicap inventory | 33.7 (18.1), n=89 | 29.2 (18.8), n=89 | 33.7 (18.1), n=86 | 29.2 (18.8), n=86 | 31.2 (17.6), n=88 | 23.0 (17.7), n=88 | −4.27 (−8.70 to −0.74), P=0.020 | −4.37 (−8.5 to −0.21) P=0.040 | |
| Hospital anxiety and depression scale | |||||||||
| Anxiety | 7.15 (4.27), n=89 | 7.01 (4.27), n=89 | 6.79 (4.33), n=86 | 5.66 (4.40), n=86 | 6.68 (3.99), n=88 | 6.03 (4.51), n=88 | −1.05 (−1.89 to −0.22), P=0.014 | −0.59 (−1.48 to 0.31), P=0.200 | |
| Depression | 4.51 (3.68), n=89 | 4.60 (4.02), n=89 | 4.11 (3.52), n=86 | 3.41 (3.41), n=86 | 4.00 (3.44), n=88 | 3.82 (3.62), n=88 | −0.87 (−1.57 to −0.17), P=0.016 | −0.35 (−1.13 to 0.44), P=0.387 | |
| EQ-5D | 0.79 (0.21), n=86 | 0.79 (0.26), n=86 | 0.75 (0.29), n=85 | 0.80 (0.28), n=85 | 0.83 (0.23), n=85 | 0.82 (0.18), n=85 | 0.04 (−0.01 to 0.10), P=0.107 | 0.02 (−0.03 to 0.07), P=0.343 | |
*All analyses adjusted for baseline levels of the stratification variable, the vertigo symptom scale-short form, and for baseline levels of the dependent variable.
†Data are reporting/total number of patients (%).
‡Data are odds ratio (95% confidence interval).