Table 2: Scalar Questionnaires for Balance Assessment
Instrument | Components | Scaling/Scoring | Psychometrics |
Activities-specific Balance Confidence (ABC) Scale |
16 items | Item: 0% No Confidence 100% Complete Confidence Aggregate: < 50% Low-functioning 50-80% Moderate level > 80% High-functioning |
At cutpoint of 67% (fallers vs non fallers): Sensitivity 84% Specificity 87% |
Dizziness Handicap Inventory (DHI) |
Subscales: - Physical 7 items - Functional 9 items - Emotional 9 items |
Item: 0 = No 2 = Sometimes 4 = Yes Aggregate: 16 - 34 Mild Handicap 36 - 52 Moderate Handicap ≥ 54 Severe Handicap |
Internal consistency: Cronbach alpha 0.89 Test-retest reliability: Pearson r > 0.80 |