Condition specific outcome measures
| Category | Percentage | |
|---|---|---|
| DHI | Mild handicap (0–30) | 32.1% |
| Moderate handicap (31–60) | 38.3% | |
| Severe handicap (>60) | 29.7% | |
| SCQ | Visual vertigo (>0.7) | 52.4% |
| HIT-6 | High impact headache (≥50) | 54.0% |
| DRS | Negligible symptoms | 10.8% |
| Bothersome symptoms | 28.3% | |
| Symptoms interfere with outside activities | 13.2% | |
| Symptoms interfere with both usual work activities and outside activities | 37.0% | |
| Unable to work or changed jobs | 4.9% | |
| Unable to work for more than 1 year or established permanent disability | 5.8% |
DHI = Dizziness Handicap Inventory; DRS = Disability Rating Scale; HIT-6 = Headache Impact Test-6; SCQ = Situational Characteristics Questionnaire.