Abstract
The aim of this study was to cross-culturally adapt and validate of the Brazilian Portuguese version of the Quality of Life in Autism Questionnaire (QoLA) among parents of children ASD. The translated version was administered to 91 parents (Male: 4, Female: 85, other: 2) of individuals diagnosed with ASD. Among these, 22 completed the questionnaire twice, providing data for the assessment of test–retest reliability (ICC). The B-QoLA score ranged from 41 to 122, with a mean (SD) of 74.3 ± 18.5 in Part A and ranged from 22 to 94, with a mean (SD) of 61.6 ± 16.4, in Part B. Cronbach’s alpha coefficient was 0.94 for Part A, 0.92 for Part B and 0.94 for total B-QoLA, indicating excellent internal consistency. Test–retest reliability was assessed using the intraclass correlation coefficient, which was 0.96 for the total scale, 0.94 for Part A, and 0.95 for Part B. Part A-X2 (df) = 297, (167), X2/2 = 1.7, CFI = 0.85, TLI = 0.84, GFI = 0.78, AGFI = 0.75, and RMSEA (95%CI) = 0.09 (0.07-0.11); Part B-X2 (df) = 297, (167), X2/2 = 1.7, CFI = 0.85, TLI = 0.84, GFI = 0.78, AGFI = 0.75, and RMSEA (95%CI) = 0.09 (0.07-0.11), thus indicating moderate fit of the model. The Brazilian version of the QoLA shows encouraging psychometric properties on each of the two subscales, showing strong internal consistency and good construct validity.
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All authors contributed to the conception and design of the study. Material preparation, data collection, and analysis were performed by Khawana Faker and Monica Almeida Tostes. The first draft of the manuscript was written by Khawana Faker and all authors commented on earlier versions of the manuscript. All authors read and approved the final manuscript.
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Faker, K., de Paula, V.A.C. & Tostes, M.A. Psychometric Properties of the Portuguese Version of the Quality of Life in Autism Questionnaire (QoLA). J Autism Dev Disord (2024). https://doi.org/10.1007/s10803-024-06428-w
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DOI: https://doi.org/10.1007/s10803-024-06428-w