Thai Version of the Modified Yale Food Addiction Scale 2.0: Cultural Adaptation, Reliability, and Validity

Objective: This study aimed to adapt the Thai version of the modified Yale Food Addiction Scale 2.0 (mYFAS-TH 2.0), taking cross-cultural considerations into account. Material and Methods: The mYFAS 2.0 was translated into Thai, resulting in the mYFAS-TH 2.0. In total, 530 participants from the Northeast of Thailand completed the Thai version of the mYFAS 2.0 (mYFAS-TH 2.0). Its psychometric properties, including content validity, were investigated using the index of item-objective congruence (IOC). Internal consistency reliability was investigated using Kuder–Richardson 20 (KR-20), and convergent validity was investigated by confirmatory factor analysis.Results: The mYFAS-TH 2.0 demonstrated strong content validity, with IOC values ranging from 0.67 to 1.00. The internal consistency reliability was robust, as indicated by a KR-20 score of 0.82 (95% confidence interval [CI]: 0.751 to 0.879). Furthermore, the mYFAS-TH 2.0 exhibited good convergent validity, as evidenced by standardized factor loadings between 0.360 and 0.741 (p-value<0.05).Conclusion: The mYFAS-TH 2.0 exhibits acceptable content validity and reliability. The findings support the use of the mYFAS-TH 2.0 in clinical settings in the Thai population.