QIDS item number | Item label | 1-factor model | 2-factor model | |
---|---|---|---|---|
‘Mood/Cognitive’ | ‘Vegetative’ | |||
1–3 | Hyposomnia | 0.35 | 0.37 | −0.23 |
4 | Hypersomnia | 0.14 | 0.00 | 0.85 |
5 | Feeling sad | 0.89 | 0.88 | 0.00 |
6/7 | Changed appetite | 0.40 | 0.36 | 0.25 |
8/9 | Changed weight | 0.12 | 0.06 | 0.36 |
10 | Concentration | 0.85 | 0.88 | −0.13 |
11 | View of myself | 0.69 | 0.67 | 0.06 |
12 | Thoughts of death/suicide | 0.66 | 0.61 | 0.32 |
13 | General interest | 0.78 | 0.79 | −0.07 |
14 | Energy level | 0.69 | 0.69 | 0.01 |
15 | Psychomotor retardation | 0.56 | 0.56 | 0.02 |
16 | Psychomotor agitation | 0.39 | 0.41 | −0.08 |