Epidemiology of Pediatric Functional Abdominal Pain Disorders: A Meta-Analysis

Abstract

CONTEXT: Functional abdominal pain disorders (FAPDs) are debilitating disorders with unknown current prevalence. OBJECTIVE: To estimate global prevalence rates of FAPDs, their entities, and variations by diagnostic criteria, geography, gender, and age. DATA SOURCES: Medline, Embase, CINAHL, PsycInfo, and Cochrane Library were searched through October 14, 2024. STUDY SELECTION: Epidemiological studies of birth cohorts, school based, and from general population samples reporting FAPD prevalence in children (aged 4-18 years) using the Rome criteria. DATA EXTRACTION: Two researchers independently performed screening, data extraction, and quality assessment. RESULTS: A total of 66 studies, encompassing 201 134 participants from 29 countries, were included. The estimated global pooled prevalence of FAPDs was 11.7% (95% CI, 10.5%-13.1%). The most prevalent type was irritable bowel syndrome (5.8%; 95% CI, 4.5-7.4%), while functional abdominal pain-not otherwise specified was least prevalent (1.2%; 95% CI, 0.7%-2.1%)). Prevalence was highest using Rome III (13.2%; 95% CI, 11.3%-15.3%) and lowest under Rome IV criteria (9.0%; 95% CI, 6.7%-12.0%; P = .05). Girls had higher prevalence (14.4%; 95% CI, 12.5%-16.6%) than boys (9.4%; 95% CI, 7.8%-11.4%; P < .01). FAPDs were nonsignificantly more prevalent in Asia (13.0%; 95% CI, 10.4%-16.3%) compared to Europe (8.3%; 95% CI, 6.4%-10.7%) and North America (7.7%; 95% CI, 4.3-13.6; P = .09). No differences by age (P = .14) were recorded. Contributing factors include anxiety, depression, stress, negative life events, and poor sleep. LIMITATIONS: Language restrictions, significant interstudy heterogeneity, and underrepresentation from Africa. CONCLUSIONS AND RELEVANCE: FAPDs affect over 1 in 9 children worldwide, with higher prevalence in girls and those with psychological stressors.

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