Skip to main content

Table 5 The internal consistency of the final version of the Visual Analogue Scale for Irritable Bowel Syndrome (VAS-IBS) (Cronbach's alpha) (n = 16).

From: Development and psychometric testing of the Visual Analogue Scale for Irritable Bowel Syndrome (VAS-IBS)

VAS-IBS

Alpha-if-item deleted

Cronbach's alpha coefficient

Physical symptoms

  

   Abdominal Pain

0.83

 

   Diarrhoea

0.85

 

   Constipation

0.85

 

   Bloating and Flatulence

0.83

 

   Vomiting and Nausea

0.81

 

Mental health

  

   Perception of mental well-being

0.81

 

Quality of Life

  

   Interference with daily life

0.83

 

Overall scale

 

0.85

  1. A minimum coefficient of 0.70 was required
Back to article page

BMC Gastroenterology

ISSN: 1471-230X

Contact us