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01.12.2015 | Research article | Ausgabe 1/2015 Open Access

BMC Oral Health 1/2015

Oral health, socio-economic and home environmental factors associated with general and oral-health related quality of life and convergent validity of two instruments

BMC Oral Health > Ausgabe 1/2015
Janice S Paula, Marcelo C Meneghim, Antônio C Pereira, Fábio L Mialhe
Wichtige Hinweise

Competing interests

The authors declare that they have no competing interests.

Authors’ contributions

JSP and ACP participated in the conception and design of the study. JSP participated in the data interpretation, data acquisition, drafting the manuscript and data analyses. MCM and FLM participated in the conception and design of the study and critical revision of manuscript. All authors read and approved the final manuscript.



The objective of this study was to evaluate the convergent validity between the domains of the Autoquestionnaire Qualité de Vie Enfant image (AUQUEI) and the Child Perceptions Questionnaire instrument (CPQ11–14) among schoolchildren and to assess the difference between socio-economic and clinical variables associated with their scores.


An analytical cross-sectional study was conducted in Juiz de Fora, Minas Gerais, Brazil, with 515 schoolchildren aged 12 years from 22 public and private schools, selected with the use of a random multistage sampling design. They were clinically examined for dental caries experience (DMFT and dmft index) and orthodontic treatments needs (DAI index) and were asked to complete the Brazilian versions of Child Perception Questionnaire (CPQ11–14) and Autoquestionnaire Qualité de Vie Enfant image (AUQUEI). In addition, a questionnaire was sent to their parents inquiring about their socio-economic status and home characteristics. The convergent validity of the Brazilian versions of CPQ11–14 and AUQUEI instruments was analyzed by Spearman’s correlation coefficients. For comparison between the summarized scores of each questionnaire with regard to the schoolchildren’s socio-environmental and clinical aspects the nonparametric Mann–Whitney was used at level of significance of 5%.


The mean DMFT index was 1.09 and 125 (24.3%) children had orthodontic treatment needs (DAI ≥ 31). There was a similarity and a weak correlation between the scores of the domains of CPQ11–14 and AUQUEI (r ranged between −0.006 and 0.0296). In addition, a significant difference was found between the scores of the two instruments according to the socio-economic variables (p < 0.05) and presence of teeth with carious lesions (p < 0.05).


The general and oral health-related quality of life instruments AUQUEI and CPQ11–14 were both found to be useful, and significant influence of socio-economic and clinical variables were detected with both instruments.
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