Fig. 1

Flow chart. Superscript lowercase letter “a” indicates children who did not participate in the 16y follow-up child questionnaire. Superscript lowercase letter “b” indicates missing data on gastrointestinal symptoms at the 16y follow-up child questionnaire. Superscript lowercase letter “c” indicates at age 12y and/or 16y. Superscript lowercase letter “d” indicates five (n = 5) children had overlapping IBS and FD and are included in both the IBS and the FD category in the figure. AP-FGID, abdominal-pain related functional gastrointestinal disorder; CD, coeliac disease; FAP, functional abdominal pain; FD, functional dyspepsia; IBD, inflammatory bowel disease; IBS, irritable bowel syndrome; N, number; y, years