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Table 5 Exploratory factor analysis for the SSS-8

From: Developing the Patient Health Questionnaire-8 for a greater impact on the quality of life of patients with functional dyspepsia compared to Somatic Symptom Scale-8

Items Factor 1 Factor 2 Factor 3
Back pain 0.713   
Pain in arms, legs, or joints 0.695   
Headaches 0.495   
Chest pain or shortness of breath 0.494   
Insomnia or trouble sleeping   0.806  
Feeling tired or having low energy   0.767  
Stomach or bowel problems    0.881
Dizziness    0.353
  1. SSS-8 Somatic Symptom Scale-8
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