Table 3.
Internal Consistency Reliability and Test–Retest Reliability of the HIV Disability Questionnaire.a
| HDQ Domain | Cronbach α (95% CI) | Kuder-Richardson-20 (95% CI) | Test–Retest Reliability ICC (95% CI), n = 61b |
|---|---|---|---|
| Physical symptoms and impairments | 0.89 (0.87-0.92) | 0.91 (0.83-0.93) | 0.88 (0.72-0.94) |
| Cognitive symptoms and impairments | 0.89 (0.84-0.93) | 0.86 (0.80-0.93) | 0.88 (0.80-0.93) |
| Mental–emotional health symptoms and impairments | 0.92 (0.90-0.94) | 0.93 (0.91-0.96) | 0.92 (0.82-0.96) |
| Uncertainty | 0.93 (0.92-0.95) | 0.96 (0.94-0.97) | 0.90 (0.83-094) |
| Difficulties with day-to-day activities | 0.90 (0.86-0.93) | 0.95 (0.93-0.97) | 0.89 (0.82-0.93) |
| Challenges to social inclusion | 0.88 (0.85-0.92) | 0.95 (0.93-0.98) | 0.88 (0.81-0.93) |
| Total HDQ (all items) | 0.97 (0.96-0.98) | 0.98 (0.97-0.99) | 0.94 (0.87-0.97) |
Abbreviations: CI, confidence interval; HDQ, HIV Disability Questionnaire; ICC, intraclass correlation coefficient.
a n = 128.
b Median imputation of episodic scores; ICC analysis included 61 participants.