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Table 1 Exploratory factor analysis of the PHQ-15: factor loading of each item

From: The relation between the patient health questionnaire-15 and DSM somatic diagnoses

 

Factor 1 (Cardiopulmonary)

Factor 2 (Pain-fatigue)

Factor 3 (Gastrointestinal)

Factor 4 (Dysmenorrhea)

PHQ11: Shortness of breath

0.799

   

PHQ10: Palpitation

0.738

   

PHQ07: Chest pain

0.709

   

PHQ09: Fainting spells

0.661

   

PHQ03: Pain in extremities

 

0.689

  

PHQ02: Back pain

 

0.662

  

PHQ06: Headache

 

0.638

  

PHQ08: Dizziness

 

0.603

  

PHQ14: Sleep disturbance

 

0.594

  

PHQ15: Fatigue

 

0.524

 

0.520

PHQ13: Nausea or indigestion

  

0.715

 

PHQ01: Stomach pain

  

0.651

 

PHQ12: Constipation or diarrhea

  

0.612

 

PHQ05: Sexual problems

  

0.428

 

PHQ04: Menstrual cramps

   

0.822

  1. Items with factor loading <0.4 were excluded
  2. PHQ-15 Patient Health Questionnaire-15
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BMC Psychiatry

ISSN: 1471-244X

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