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Table 3 Comparison between original subscale structure and data-suggested structure

From: Evaluation of the Irritable Bowel Syndrome Quality of Life (IBS-QOL) questionnaire in diarrheal-predominant irritable bowel syndrome patients

  EFA Model with Varimax Rotation (Eigenvalues)
Original subscale Factor 1 Factor 2 Factor 3 Factor 4 Factor 5 Factor 6
(37.8) (3.20) (2.48) (1.76) (1.46) (1.24)
Dysphoria 13, 16 1, 6, 7, 9, 10 30    
Interference with activity   18 3, 27, 29, 31 22 19  
Body image     5, 21, 25, 26   
Health worry 32    4 15  
Food avoidance      11, 23, 28  
Social reaction 14, 17, 34    2   
Sexual       12, 20
Relationship 8, 24, 33      
  1. Note: Eigenvalues for the extracted factors are in parentheses and higher values represent higher amounts of the variance observed in the data captured by a given factor.