Validation of the Brazilian Versions of the Food Allergy Quality of Life Questionnaires
Saturday, March 3, 2018
South Hall A2 (Convention Center)
Raquel B. Mendonca, Roseli O. S. Sarni, Dirceu Sole, MD PhD FAAAAI
RATIONALE: The aim of this study was to develop and validate the Brazilian versions of the Food Allergy Quality of Life Questionnaire – Parent Form (FAQLQ-PF) and the Food Allergy Quality of Life – Parental Burden (FAQL-PB).

METHODS: The original versions of the questionnaires were translated to Portuguese and culturally adapted according to the WHO guidelines. The validation was performed in a cross-sectional study, including two hundred and one parents of children with a clinical diagnosis of food allergy, aged 0-4 years. The internal consistency of the instruments was evaluated by Cronbach's alpha coefficient; the reproducibility was determined by test-retest applying the Intraclass Correlation Coefficient (ICC); and the construct validity was assessed using Spearman correlations between specific (FAQLQ-PF and FAQL-PB) and generic questionnaires, Pediatric Quality of Life Inventory version 4.0 (PedsQL 4.0) and the PedsQl Family Impact Module.

RESULTS: We applied the Brazilian Version of the FAQLQ-PF to 183 parents and of the FAQL-PB to 148 parents. The Cronbach's alpha coefficients were 0.85 and 0.91, respectively. The ICCs between the test-retest were 0.87 and 0.84, respectively. The correlations between specifics and generics questionnaires were significant (-0.27 for children and -0.64 for their parents, p<0.05).

CONCLUSIONS: The Brazilian versions of the FAQLQ-PF and FAQL-PB showed good internal consistency, reliability and satisfactory validity.