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

Table 1 Summary of reliability of the Thai version of Rome IV questionnaire for functional gastrointestinal disorders in infants and toddlers

Reliability test	Cronbach-alpha coefficient1	ICC2
Section A: Infant gastrointestinal problems	0.753	0.782 (0.658-0.865)
Section B: Vomiting	0.712	0.782 (0.658-0.865)
Section C: Bowel movement	0.75	0.807 (0.694-0.881)

¹Cronbach’s alpha coefficient was categorized as < 0.5: Unacceptable, 0.5-0.59: Poor, 0.6-0.69: Questionable, 0.7-0.79: Acceptable, 0.8-0.89: Good, ≥ 0.9: Excellent.

²Intraclass correlation coefficient was categorized as < 0.5: Poor, 0.5-0.74: Moderate, 0.75-0.9: Good, > 0.9: Excellent.

ICC: Intraclass correlation coefficient.