Reliability and validity of the Child Perception Questionnaire 8 ∼ 10 (CPQ8∼10) in China: an instrument for measuring oral health-related quality of life among 8-10-year-old children

Objectives Children aged 8-10 are in a critical stage of growth and development, facing complex and specific oral health problems. In China, there is no specific assessment questionnaire for this age group. The Child Perception Questionnare 8 similar to 10(CPQ(8 similar to 10)) has been widely used in many countries, with good reliability and validity. This study aimed to translate the CPQ(8 similar to 10) into Chinese and assess its reliability and validity, and ascertain its applicability for 8-10-year-old children in China. Materials and methods Brislin's translation model was used in developing the Chinese version of CPQ(8 similar to 10). Internal consistency, retest reliability, criterion validity, and confirmatory factor analysis were performed to evaluate the reliability and validity of the Chinese version of the CPQ(8 similar to 10) among 494 8 similar to 10-year-old children in China. Results A Chinese version of the CPQ(8 similar to 10), aligned with Chinese culture and social features, was developed. The criterion validity was 0.719 (P < 0.001). The item-level content validity index (I-CVI) and scale-level content validity index (S-CVI) for the Chinese version of the CPQ(8 similar to 10) were 0.80 similar to 1.00 and 0.968, respectively. Factor analysis revealed a logical relationship among the items in the Chinese version of the CPQ(8 similar to 10). The Cronbach's a coefficient, retest reliability, and Guttman split-half reliability coefficient for the Chinese version of the CPQ(8 similar to 10) were 0.819, 0.830, and 0.849, respectively. Conclusions The Chinese version of the CPQ(8 similar to 10) exhibited a structure consistent with the original questionnaire, displaying good reliability and validity. This study facilitates the application of CPQ(8 similar to 10) in China. Clinical relevance The Chinese version of the CPQ(8 similar to 10) is a brief and suitable tool to evaluate oral health-related quality of life of 8 similar to 10-year-old children.

Automated summary

This study translated the CPQ(8 similar to 10) into Chinese and evaluated its reliability and validity. The results showed that the Chinese version of CPQ(8 similar to 10) had a structure consistent with the original questionnaire and displayed good reliability and validity. This study facilitates the application of CPQ(8 similar to 10) in China for evaluating the oral health-related quality of life of 8 similar to 10-year-old children.