The PedsQL？ Oral Health Scale: feasibility, reliability and validity of the Brazilian Portuguese version

The PedsQL？ Oral Health Scale was forward-backward translated and cross-culturally adapted for the Brazilian Portuguese language. In order to assess the feasibility, reliability and validity of the Brazilian version of the instrument, a study was carried out in Belo Horizonte with 208 children and adolescents between 2 and 18？years-of-age and their parents. Clinical evaluation of dental caries, socioeconomic information and the Brazilian versions of the PedsQL？ Oral Health Scale, PedsQL？ 4.0 Generic Core Scales, Child Perceptions Questionnaire (CPQ11-14 and CPQ8-10) and Parental-Caregiver Perception Questionnaire (P-CPQ) were administered. Statistical analysis included feasibility (missing values), confirmatory factor analysis (CFA), internal consistency reliability, and test-retest intraclass correlation coefficients (ICC) of the PedsQL？ Oral Health Scale.There were no missing data for both child self-report and parent proxy-report on the Brazilian version of the PedsQL？ Oral Health Scale. The CFA showed that the five items of child self-report and parent proxy-report loaded on a single construct. The Cronbach's alpha coefficients for child/adolescent and parent oral health instruments were 0.65 and 0.59, respectively. The test-retest reliability (ICC) for child self-report and parent proxy-report were 0.90 [95% confidence interval (CI)？=？0.86-0.93] and 0.86 (95%CI？=？0.81-0.90), respectively. The PedsQL？ Oral Health Scale demonstrated acceptable construct validity, convergent validity and discriminant validity.These results supported the feasibility, reliability and validity of the Brazilian version of the PedsQL？ Oral Health Scale for child self-report for ages 5–18？years-old and parent proxy-report for ages 2–18？years-old children.