Table 7:
Reliability of Anxiety and Depression Measures
| Instrument | Internal Consistency Reliability Cronbach’s Alpha (95% CI) |
Test-Retest Reliability Intraclass Correlation Coefficient (95% CI) |
|---|---|---|
| Depression | ||
| PHQ-2 | 0.82 (0.63–1.0) |
0.86 (0.81–0.90) |
| PHQ-9 | 0.89 (0.82–0.95) |
0.85 (0.80–0.89) |
| PROMIS Depression Short Form-8a | 0.96 (0.89–1.0) |
0.85 (0.80–0.89) |
| HADS-D | 0.84 (0.76–0.92) |
0.83 (0.77–0.87) |
| Kessler-6 | 0.87 (0.78–0.95) |
0.87 (0.82–0.90) |
| Anxiety | ||
| OASIS | 0.91 (0.82–1.0) |
0.73 (0.64–0.80) |
| GAD-7 | 0.91 (0.84–0.99) |
0.76 (0.68–0.82) |
| PROMIS Anxiety Short Form-8a | 0.94 (0.87–1.0) |
0.79 (0.72–0.84) |
| HADS-A | 0.87 (0.79–0.95) |
0.83 (0.77–0.87) |