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. 2017 Jul 1;23(3):349–362. doi: 10.5056/jnm16220

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© 2017 The Korean Society of Neurogastroenterology and Motility

This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Forest plot and funnel plot of anxiety levels in irritable bowel syndrome (IBS) patients. (A) Forest plot of anxiety level in IBS patients, divided by the type of questionnaire assessing anxiety levels. (B) Funnel plot of anxiety levels in IBS patients, divided by the type of questionnaire assessing anxiety levels. SMD, standard mean difference; STAI, State and Trait Anxiety Inventory; HADS, Hospitalization Anxiety and Depression Scale; SAS, Self-Rating Anxiety Scale; Others included sphere, Symptom Checklist-90 and BAI; SE, standard error.