Validity and reliability of the Persian version of the short-form child perceptions questionnaire 11–14-year-old children (CPQ11–14)

BACKGROUND: The Child Perception questionnaire 11–14 (CPQ 11–14) is an efficient tool for assessment of oral health-related quality of life (OHRQoL). This questionnaire has been briefed to 16 items (CPQ11–14 ISF-16) to facilitate its employment. The purpose the present study was to translate CPQ11–14 ISF-16 to Persian language, culturally adapt, and initially evaluate its among adolescent population. MATERIAL AND METHOD: The questionnaire has been translated to Persian, then back-translated to English, and finally underwent cultural adaptation and pretesting assessment. It was then filled out by 318 participents (175 grils and 143 boys), with the age of 11 to 14 years resident in Shiraz, Iran. The Persian version of CPQ11–14 ISF-16 along with the Psychosocial Impact of Dental Aesthetics Questionnaire (PIDAQ) and two suggested global questions were administered among participants to assess its criterion validity. RESULTS: The factor analysis extracted two domains and the factor loading of domains ranged from 0.423 to 0.837. Persian version of CPQ11–14 ISF-16 presented high internal consistency (Cronbach’s alpha = 0.854), and showed excellent criterion validity with PIDAQ (rho = 0.731, p < 0.001). There was a statistically significant positive moderate correlation between CPQ11–14 ISF-16 and its factors 1 and 2 and two global questions (first global question: rho = 0.439, p < 0.001; second global question: rho = 0.457, p = 0.035). CONCLUSION: The Persian version of CPQ11–14 ISF-16 has optimal validity and reliability in a general population of 11–14-year-old Persian children.