Epidemiology of pediatric functional abdominal pain disorders: a meta-analysis

Meta-analysis of 58 studies (n=196,472 children). Pooled global prevalence of functional abdominal pain disorders ~13.5%, with substantial heterogeneity (3-19%). Higher in girls and during adolescence. Functional abdominal pain (Rome IV) far more common than organic; psychological correlates (anxiety, depression, parental anxiety) consistently identified.