Table 4.
Consistency Tests Between the Paper and Smartphone Versions of the QIDS-SR16
| Item | Paper Mean ± SD |
Electronic Mean ± SD |
ICC (95% CI) |
|---|---|---|---|
| 1. Sleep | 2.55 ± 0.55 | 2.55 ± 0.56 | 0.858 (0.793–0.903) |
| 2. Sad mood | 2.32 ± 0.63 | 1.90 ± 0.50 | 0.769 (0.663–0.842) |
| 3. Appetite/Weight | 1.47 ± 0.23 | 1.44 ± 0.35 | 0.923 (0.887–0.947) |
| 4. Concentration/Decision-making | 1.78 ± 0.68 | 1.63 ± 0.65 | 0.860 (0.796–0.904) |
| 5. Self-outlook | 1.87 ± 0.64 | 1.90 ± 0.61 | 0.832 (0.755–0.885) |
| 6. Thoughts of death or suicide | 0.86 ± 0.24 | 0.87 ± 0.23 | 0.854 (0.788–0.900) |
| 7. Involvement | 2.03 ± 0.56 | 1.95 ± 0.54 | 0.898 (0.851–0.930) |
| 8. Energy level | 1.54 ± 0.42 | 1.48 ± 0.43 | 0.868 (0.807–0.909) |
| 9. Agitation/Retardation | 1.71 ± 0.47 | 1.65 ± 0.44 | 0.835 (0.760–0.887) |
| Overall score | 16.51 ± 2.63 | 16.12 ± 2.70 | 0.904 (0.861–0.934) |
Abbreviations: QIDS-SR16, Quick Inventory of Depressive Symptomatology-Self-Report; SD, standard deviation; ICC, intraclass correlation coefficient; CI, confidence interval.