ArticleWorld journal of clinical pediatrics2026
Evaluating the role of the Bristol stool chart in diagnosing functional constipation in pediatric populations.
Article in World journal of clinical pediatrics, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
backgroundFunctional constipation (FC) is a common condition among children worldwide. Although the Rome IV criteria are diagnostic standard, evaluating infants and toddlers can be challenging. The Bristol stool chart (BSC) is a simple tool for describing stool consistency, but its diagnostic accuracy in young children is uncertain.
aimTo compare the diagnostic performance of the BSC and Rome IV criteria in children under four years.
methodsA prospective cross-sectional study was conducted from June 2025 to October 2025 among children aged 6 months to 4 years attending well-child visits at the Hospital. Parents completed validated Thai versions of the Rome IV questionnaire and the BSC. FC was diagnosed using the Rome IV criteria. Sensitivity, specificity, positive predictive value (PPV), and negative predictive value (NPV) of the BSC were calculated.
resultsAmong 275 children enrolled, 43 (15.6%) met the Rome IV criteria for FC. The FC group had a significantly higher mean age than the non-FC group (30.1 ± 11.9 months
conclusionThe BSC shows high specificity but low sensitivity in young children; stool types 1-2 support FC and are best used to confirm diagnosis alongside the Rome IV criteria.
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