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Table 2 Factor coefficients after varimax rotation

From: Evaluation of the Birmingham IBS symptom questionnaire

Question

Factor1

Factor2

Factor3

Factor description

Hard bowel motions

0.90

  

Constipation

Straining

0.86

   

Constipation

0.89

   

Loose, watery stools

 

0.59

  

Diarrhoea

 

0.63

  

Leaked or soiled

 

0.76

 

Diarrhoea

Urgency

 

0.66

  

Mucus or slime

 

0.70

  

Pain

  

0.78

 

Pain after eating

  

0.84

Pain

Sleep problem

  

0.65

 

Eigenvalue

2.8

2.4

2.2