From: The factor structure of major depressive symptoms in a sample of Chinese earthquake survivors
PHQ-9 Items | Model 1 | Model 2a | Model 2b | Model 2c | Model 2d |
---|---|---|---|---|---|
Anhedonia | Depression | Non-somatic | Non-somatic | Non-somatic | Somatic |
Depressed mood | Depression | Non-somatic | Non-somatic | Non-somatic | Non-somatic |
Sleep difficulties | Depression | Somatic | Somatic | Somatic | Somatic |
Fatigue | Depression | Somatic | Somatic | Somatic | Somatic |
Appetite changed | Depression | Somatic | Somatic | Somatic | Somatic |
Feeling of worthless | Depression | Non-somatic | Non-somatic | Non-somatic | Non-somatic |
Concentration difficulties | Depression | Non-somatic | Non-somatic | Somatic | Somatic |
Psychomotor agitations/retardation | Depression | Non-somatic | Somatic | Somatic | Somatic |
Thoughts of death | Depression | Non-somatic | Non-somatic | Non-somatic | Non-somatic |