Table 4.
Subgroup analyses of symptom duration, anxiety, and depression.
| Variable | Mean DHI score (SD) | Mean EQ-5D score (SD) | Regression coefficient (95% CI) | p-value |
|---|---|---|---|---|
| Symptom duration (< 1 year) | 30.42 (7.54) | 0.81 (0.12) | −0.35 (−0.50, −0.20) | 0.001 |
| Symptom duration (>1 year) | 45.62 (9.31) | 0.61 (0.10) | −0.45 (−0.60, −0.30) | 0.001 |
| HADS anxiety (low: 0–7) | 28.45 (6.75) | 0.85 (0.11) | −0.20 (−0.35, −0.10) | 0.045 |
| HADS anxiety (moderate: 8–10) | 38.52 (8.13) | 0.72 (0.14) | −0.32 (−0.45, −0.20) | 0.032 |
| HADS anxiety (high: 11–21) | 48.23 (10.34) | 0.62 (0.15) | −0.52 (−0.65, −0.40) | 0.001 |
| HADS depression (Low: 0–7) | 29.34 (6.85) | 0.84 (0.10) | −0.25 (−0.40, −0.15) | 0.039 |
| HADS depression (moderate: 8–10) | 40.12 (7.89) | 0.71 (0.13) | −0.38 (−0.50, −0.25) | 0.028 |
| HADS depression (High: 11–21) | 49.78 (9.45) | 0.60 (0.14) | −0.55 (−0.70, −0.40) | 0.001 |
DHI, Dizziness handicap inventory; EQ-5D, EuroQol-5 dimension; HADS, Hospital Anxiety and depression scale; SD, Standard deviation; CI, Confidence Interval.