Validity and reliability of the Thai "Rome IV diagnostic questionnaires" for functional gastrointestinal disorders in neonates and toddlers.

BACKGROUND

The Rome Foundation's questionnaires, including the latest version, Rome IV diagnostic criteria since 2016, are widely used globally for diagnosing functional gastrointestinal disorders (FGIDs). However, a tailored Thai version for diagnosing FGIDs in neonates and toddlers is yet to be developed.

AIM: To develop and validate the Thai version of the Rome IV diagnostic questionnaire for FGIDs in neonates and toddlers.

METHODS

This study was conducted at a tertiary hospital in Bangkok. The Rome IV diagnostic questionnaire for neonates and toddlers was translated into Thai following Rome Foundation guidelines. Validity was assessed using item-objective congruence. The final version was administered to 65 caregivers of children under 4 years. Reliability was evaluated using Cronbach's alpha and intraclass correlation coefficient based on test-retest responses collected over a 4-15 day interval.

RESULTS

A total of 58 complete questionnaires were returned. The median interval between the first and second time was 7 days (range: 4 days to 15 days). The item-objective congruence index for the Thai-adapted Rome IV diagnostic questionnaire was 0.74. Internal consistency, as indicated by Cronbach's alpha, was 0.753, 0.712, and 0.750 for the three respective sections. The intraclass correlation coefficients for test-retest reliability were 0.782, 0.782, and 0.807.

CONCLUSION

The Thai Rome IV diagnostic questionnaire for FGIDs in neonates and toddlers demonstrates acceptable validity and reliability, supporting its use in future clinical and research applications.