TABLE 2.
Descriptive characteristics for observed variables.
| Variable | Mean | SD | Min. | Max. |
|---|---|---|---|---|
| 1. Little interest or pleasure in doing things (anhedonia) | 0.76 | 0.95 | 0 | 3 |
| 2. Feeling down, depressed or hopeless | 0.80 | 0.90 | 0 | 3 |
| 3. Trouble falling or staying asleep (insomnia) or sleeping too much (hypersomnia) | 0.92 | 1.14 | 0 | 3 |
| 4. Feeling tired or having little energy | 0.99 | 1.11 | 0 | 3 |
| 5. Poor appetite or overeating | 1.14 | 1.27 | 0 | 3 |
| 6. Feeling bad about yourself – or that you are a failure or have let yourself or your family down | 0.51 | 0.88 | 0 | 3 |
| 7. Trouble concentrating on things such as reading the newspaper or watching television | 0.47 | 0.83 | 0 | 3 |
| 8. Moving or speaking so slowly that other people could have noticed (retardation). Or the opposite – being so fidgety or restless that you have been moving around a lot more than usual (psychomotor agitation) | 0.22 | 0.61 | 0 | 3 |
| 9. Thoughts that you would be better off dead or of hurting yourself in some way (suicidal ideation) | 0.36 | 0.79 | 0 | 3 |
SD, standard deviation; Min., minimum; Max., maximum.