Responsiveness of the Brazilian versions of CPQ 11-14 and Child-OIDP.

AIM: The aim of this study was to investigate the responsiveness of the Brazilian versions of Child Perceptions Questionnaire (CPQ11-14 ) and Child-Oral Impacts on Daily Performances (Child-OIDP).

DESIGN: The data were collected from a convenience sample of 209 patients aged 10-15 years, who visited the adolescent dental clinic of Federal University of Santa Maria, Brazil. The subjects answered the CPQ11-14 and the Child-OIDP prior to their dental treatment and 1 month after concluding the treatment. The responsiveness of CPQ11-14 and Child-OIDP was analysed through (a) the mean change observed in scores before and after treatment, (b) an investigation of the effect size, (c) an assessment of the statistical significance of changes within the groups over time, as per the global transition judgement, and (d) the receiver operating characteristic (ROC) curve.

RESULTS: Positive changes were observed for both questionnaires. According to global transition judgement, 82.30% of the participants reported an improvement following treatment, 16.75% reported no change, and 0.96% reported deterioration. The effect size was 0.8% and 0.5% for the overall CPQ11-14 and Child-OIDP, respectively. The area under the curve was 0.38 for CPQ11-14 and 0.43 for Child-OIDP.

CONCLUSION: The Brazilian versions of CPQ11-14 and Child-OIDP demonstrated limited responsiveness following dental treatment.