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Table 5 Illness perception: users vs. non-users of treatment approaches with weak or lack of evidence

From: Illness perception and health care use in individuals with irritable bowel syndrome: results from an online survey

Subscale/Dimension users non-users  
  n Median n Median U Z p r
Time course 286 21.00 208 21.00 29,322.50 -0.271 0.787 0.01
Consequences 283 19.00 208 18.00 21,691.00 -5.000  < 0.001 0.23
Personal control 290 11.00 214 11.50 30,665.00 -0.227 0.821 0.01
Cure control 285 10.00 212 10.00 28,676.50 -0.973 0.331 0.04
Coherence 291 13.00 203 12.00 28,279.00 -0.808 0.419 0.04
Cyclic occurrence 287 14.00 213 14.00 28,995.50 -0.993 0.321 0.04
Emotional representation 285 19.00 213 19.00 27,433.50 -1.842 0.065 0.08
  1. In the illness perception questionnaire revised, the term “irritable bowel syndrome” was used instead of “illness” in the original questionnaire. r ≥ 0.1 and < 0.3 small effect size, r ≥ 0.3 and < 0.5 moderate effect size, r ≥ 0.5 large effect size [32, 33]