Validity and Reliability of the Persian version of buffalo model questionnaire ( P-BMQ) among 7 to 12 years old normal children

Background: The Buffalo Model Questionnaire (BMQ) is the only specialized Buffalo model questionnaire complementing the Buffalo Model diagnostic test battery that specifically assesses all the symptoms and problems potentially experienced by individuals with Auditory Processing Disorder (CAPD). The present study was conducted to translate BMQ into Persian and normalize it for an Iranian audience and also determine the validity and reliability of this version. Objectives: The purpose of this research was to provide a Persian version of the BMQ (P-BMQ) and to determine its validity and reliability. Methods: The original version of BMQ was translated into Persian considering the International Quality of Life Assessment (IQOLA) protocol. Its content validity was assessed, then, cultural normalization and face validity assessment were carried out among 60 normal children. To determine the reliability of the questionnaire 30 children’s parents were asked to participate in the retest (three to seven days later). Results: For face validity, 80% of the participants gave above 4 meaning that each question obtained the normal score. The CVR coefficient for all questions was higher than 66.66%, meaning all the items were relevant to the evaluated attribute. Considering that the alpha coefficient of the questionnaire was 0.986, the internal consistency was assessed to the optimal level. Interclass Correlation Coefficient (ICC) was significant in all components (p= 0.001). Conclusion: The Persian version of the BMQ had a good quality translation according to the IQOLA protocol. This valid and reliable questionnaire could be used for 7 to12 year-old normal children