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Table 2 The expert panel members' (n = 9) agreement on the items in the Visual Analogue Scale for Irritable Bowel Syndrome (VAS-IBS) concerning content validity (relevance and definition) and acceptability of the scale.

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

  Relevance Definition Acceptability of the scale
  Score 4 and 3 Score 2 and 1 Score 4 and 3 Score 2 and 1 Score 4 and 3 Score 2 and 1
Physical symptoms       
   Overall item bowel symptoms 8 (6+2) 1 8 (4+4) 1 9 (8+1) 0
   Abdominal Pain 9 (8+1) 0 9 (6+3) 0 8 (6+2) 1
   Diarrhoea 9 (8+1) 0 8 (6+2) 1 8 (6+2) 1
   Constipation 9 (8+1) 0 8 (6+2) 1 8 (6+2) 1
   Bloating and Flatulence 8 (7+1) 1 8 (6+2) 1 9 (7+2) 0
   Vomiting and Nausea 8 (6+2) 1 8 (5+3) 1 8 (7+1) 1
Mental health       
   Perception of mental well-being 9 (6+3) 0 9 (6+3) 0 9 (9+0) 0
Quality of Life       
   Well-being previous week 9 (8+1) 0 9 (6+3) 0 9 (9+0) 0
   Perception of quality of life 9 (9+0) 0 9 (8+1) 0 9 (9+0) 0
  1. The level of agreement was set to no more than one panel member scoring an item at less than 3.