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Jornal de Pediatria

Print version ISSN 0021-7557

Abstract

ROZOV, Tatiana et al. Linguistic validation of cystic fibrosis quality of life questionnaires. J. Pediatr. (Rio J.) [online]. 2006, vol.82, n.2, pp. 151-156. ISSN 0021-7557.  http://dx.doi.org/10.2223/JPED.1463.

OBJECTIVE: The purpose of this study was to validate the Portuguese translations of four cystic fibrosis quality of life questionnaires (CFQ). The first three were developed for patients with cystic fibrosis aged from 6 to 11 years, from 12 to 13 years and 14 years or more, while the fourth was developed for the parents of patients aged 6 to 13 years. MATERIAL AND METHODS: The four CFQ translations contained from 35 to 50 questions covering nine domains and were validated as follows: translation from English to Portuguese, pilot application, back translation and then approval by the author of the English versions. The four translations were applied to 90 stable patients (30 from each age group) and the parents of patients aged 6-13 years (n = 60), on two occasions with a 13 to 17 day interval. Intraclass Correlation Coefficients (ICC) were used to measure reproducibility. This study was approved by the Commission for Ethics in Research at the institution. RESULTS:Reproducibility was good (ICC = 0.62 to 0.99) for the four translations in all domains, with the exceptions of the Digestion domain for the 6 to 11 and 12 to 13 years age groups with ICC = 0.59 and 0.47, respectively and the Social Role domain for the 14 and over age group (ICC = -0.19 ) CONCLUSION: The translation and cultural adaptation for Brazil resulted in four CFQ versions that are easy to understand and offer good reproducibility.

Keywords : Questionnaires; quality of life; cystic fibrosis; validation.

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