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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 loadingsβ
 Item 1. Anhedonia0.61
 Item 2. Depressed mood0.57
 Item 3. Sleep disturbance0.70
 Item 4. Fatigue0.78
 Item 5. Poor appetite/overeating0.65
 Item 6. Feeling guilty0.68
 Item 7. Poor concentration0.63
 Item 8. Psychomotor agitation/retardation0.73
 Item 9. Thoughts of death0.73