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Table 4 Responsiveness measured by effect size

From: Evaluation of the Birmingham IBS symptom questionnaire

Dimension Health status at 7/10 days Baseline Change at 7/10 days Effect size
   Mean (SD) Mean (SD)  
Pain     
  Worse (n = 30) 38.2 (21.7) 3.8 (21.6) 0.18
  Same (n = 245) 33.3 (19.2) -2.4 (12.5) 0.13
  Improved (n = 47) 31.0 (22.1) -10.2 (14.4) 0.46
Constipation     
  Worse (n = 30) 25.8 (22.0) -1.3 (16.5) 0.06
  Same (n = 242) 35.0 (27.7) -1.6 (16.4) 0.06
  Improved (n = 48) 32.2 (25.2) -6.8 (15.9) 0.27
Diarrhoea     
  Worse (n = 29) 31.2 (24.7) 3.9 (10.7) 0.16
  Same (n = 236) 21.1 (16.9) -1.4 (10.0) 0.08
  Improved (n = 46) 19.4 (17.0) -5.4 (11.8) 0.32
Overall     
  Worse (n = 29) 31.6 (16.8) 2.3 (10.6) 0.14
  Same (n = 230) 28.2 (13.3) -1.6 (8.2) 0.12
  Improved (n = 46) 26.1 (14.0) -7.4 (9.5) 0.53