Cross-cultural adaptation and psychometric properties of the Brazilian version of the Autism Family Experience Questionnaire (AFEQ) quality of life instrument
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Abstract
Introduction: The Autism Family Experience Questionnaire (AFEQ) aims to measure quality of life through the family experience of parents/caregivers of preschool-aged children with autism spectrum disorder. Objective: To carry out the cross-cultural adaptation of the AFEQ into Brazilian Portuguese (B-AFEQ) and to evaluate the psychometric properties of the Brazilian version produced by analyzing preliminary evidence of reliability and validity. Methods: Cross-cultural adaptation and assessment of psychometric properties were performed using Cronbach's alpha, test-retest reliability, exploratory factor analysis, confirmatory factor analysis, and structural equation modeling. The sample consisted of 102 participants, of whom 17 responded a second time for the test-retest reliability analysis. Results: The total B-AFEQ score demonstrated acceptable internal consistency (>0.70-0.90). Test-retest reliability was excellent (>0.80). In the exploratory factor analysis (EFA), the prerequisites were met (KMO=0.72; Bartlett's test of sphericity significant [p<0.001]). In the confirmatory factor analysis (CFA), the goodness-of-fit indices were X2 (df)=1908 (1074), CFI =0.54, TLI =0.52, and RMSEA (95% CI) =0.08 (0.08-0.09). In the structural equation modeling (SEM), the goodness-of-fit indices were X2 (df)=1684 (1074), CFI =0.85, TLI =0.84, and RMSEA (95% CI) =0.07 (0.06-0.08). Conclusion: The cross-cultural adaptation of the AFEQ was satisfactory, and the dimensionality of the instrument was proven with acceptable model fit. The B-AFEQ proved to be valid and reliable for measuring the quality of life of parents of children with Autism Spectrum Disorder aged 2 to 5 years and their families.
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