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Table 4 Standardized factor loadings for the two-factor model

From: Normative data and psychometric properties of the Patient Health Questionnaire-9 in a nationally representative Korean population

Factor loadings

β

Affective–somatic

 Item 1. Anhedonia

0.61

 Item 2. Depressed mood

0.57

 Item 3. Sleep disturbance

0.70

 Item 4. Fatigue

0.78

 Item 5. Poor appetite/overeating

0.65

Cognitive

 Item 6. Feeling guilty

0.68

 Item 7. Poor concentration

0.63

 Item 8. Psychomotor agitation/retardation

0.73

 Item 9. Thoughts of death

0.73