Table 2.
Reliability (alpha), network centrality, factor adjustment (factor loading and thresholds) and difficulty parameter of Kessler's items
| K10 | K6 | ||
|---|---|---|---|
| Threshold | Alpha | Alpha | |
| Depression | |||
| Q1. ... about how often did you feel tired out for no good reason? | 1.82 | 0.89 | |
| Q4. ... about how often did you feel hopeless?* | 2.03 | 0.89 | 0.78 |
| Q7. ... about how often did you feel depressed? | 2.18 | 0.88 | |
| Q8. ... about how often did you feel that everything was an effort?* | 1.64 | 0.90 | 0.81 |
| Q9. ... about how often did you feel so sad that nothing could cheer you up?* | 1.93 | 0.89 | 0.77 |
| Q10. ... about how often did you feel worthless?* | 2.22 | 0.89 | 0.77 |
| Anxiety | |||
| Q2. ... about how often did you feel nervous?* | 1.92 | 0.88 | 0.76 |
| Q3. ... about how often did you feel so nervous that nothing could calm you down? | 2.12 | 0.87 | |
| Q5. ... about how often did you feel restless or fidgety?* | 2.18 | 0.88 | 0.77 |
| Q6. ... about how often did you feel so restless you could not sit still? | 2.12 | 0.89 | |
| Overall | 0.88(0.86;0.90) | 0.78(0.74;0.82) | |
EC Eigen centrality
* Questions inclued in the 6-item version of the instrument