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Table 5 Internal consistency reliability and test-retest reliability

From: Irritable bowel syndrome-specific health-related quality of life instrument: development and psychometric evaluation

  Cronbach’s alpha ICC (95 % confidence interval)
Total IBS-HR-QOL 0.93 0.88 (0.79–0.86)*
Factor 1: Bowel function 0.85 0.81 (0.68–0.88)*
Factor 2: Emotions 0.87 0.82 (0.69–0.89)*
Factor 3: Concerns about social activity 0.90 0.88 (0.79–0.92)*
Factor 4: Consideration of foods 0.87 0.77 (0.61–0.86)*
  1. *p < 0.001