Table 1.

Demographic Characteristics of the Subjects Recruited

Variable	FAPDs (n = 56)	Normal reference (upper GI, n = 19)	Normal reference (lower GI, n = 41)	IBD (CD + UC) (n = 75)
Sex (boys:girls)	39:17	8:11	21:20	55:20
Age (median [range], yr)	14.1 (2.8–18.9)	12.0 (2.0–17.0)	12.2 (3.3–17.9)	14.7 (2.5–19.5)

FAPDs, functional abdominal pain disorders; upper GI, upper gastrointestinal region including gastric antrum, gastric body, duodenum, and terminal ileum; lower GI, lower gastrointestinal region including cecum, ascending colon, transverse colon, descending colon, and rectosigmoid colon; IBD, inflammatory bowel disease; CD, Crohn’s disease; UC, ulcerative colitis.

Age is shown as median value along with range (minimum-maximum).