Fig 3. Regional variation of the frequency of intestinal-related IP admissions, ER visits, and GI specialist visits.

Note: For IRR, incidence rate ratio, reference is the rest of US rate. Abbreviations: ER: emergency room; GI: gastrointestinal; IP: inpatient; US, United States. Map data reprinted from SAS software version 9.3 (Cary, NC) under a CC BY license, with permission from GfK GeoMarketing (Bruchsal, Baden-Württemberg, Germany), original copyright 2015.