| FAPD | Functional abdominal pain disorder |
| IBS | Irritable bowel syndrome |
| FD | Functional dyspepsia |
| FAP—NOS | Functional abdominal pain—not otherwise specified |
| FGID | Functional gastrointestinal disorder |
| BMI | Body mass index |
| OR | Odds ratio |
| WHO | World Health Organization |
| CI | Confidence interval |
| FODMAPs | Fermentable oligo-, di-, monosaccharides and polyols |
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