PEDSQLTM ASTHMA MODULE - SHORT FORM 22: translation, cross-cultural adaptation and evaluation of psychometric indicators of the Brazilian version.
Adolescent, Asthma, Child, Validation Studies, Psychometrics, Quality of life.
Objectives: To translate, transculturally adapt and evaluate the psychometric indicators of the Brazilian version of the PedsQLTM Asthma Module - Short Form 22. Materials and methods: An exploratory methodological study carried out in two stages: linguistic validation (translation, back translation, multiprofessional committee review and pre-test) and and evaluation of the psychometric indicators of the instrument (reliability, reproducibility, content validity, construct validity, and concurrent validity). Socioeconomic status (Brazil Economic Classification Criteria); clinical control (Childhood Asthma Control Test (c-ACT) and Asthma Control Test (ACT)); health-related quality of life (HRQOL) (Pediatric Asthma Quality of Life Questionnaire (PAQLQ) e PedsQLTM Asthma Module) and spirometry were used for evaluation. The feasibility, reliability, and reproducibility of the measurements obtained with the Brazilian version of the instrument were evaluated through the floor and ceiling effect, Cronbach's alpha coefficient and test-retest (subgroups "with change" and "without change"), respectively. The construct validity was evaluated by the exploratory factorial analysis (EFA) and the concurrent validity by the correlation between the Brazilian version of PedsQLTM Asthma Module SF 22 and PedsQLTM Asthma Module, PAQLQ, c-ACT/ACT and FEV1 and FEV1/FVC. Results: The first step included 57 participants (26 patients between 5 to 18 years and 31 parents/guardians). In the second step participated 234 individuals, of which 117 were patients between 2 to 18 years and 117 parents/guardians. All items of the questionnaire were clear and understandable (agreement ranging from 0.78 to 1.00). In the pre-test (n = 57), no participants had difficulty understanding (agreement above 0.90). The Brazilian version of the instrument had an internal consistency of 0.83 and 0.77 for the version of children/adolescents and parents/guardians, respectively. The test-retest indicated moderate/strong correlations between measures, in the groups with and without change. The internal structure of the Brazilian version of PedsQLTM Asthma Module SF 22 was evaluated through exploratory factorial analysis (EFA). From the acceptable adjustment indexes, the EFA was performed. Pre-determined 03 factors of orthogonal rotation (varimax) were identified for each domain (asthma symptoms and treatment problems) in the children/adolescents and parents/guardians versions to which they explained an adequate cumulative total variance. The main HRQOL indicators of children and adolescents with asthma were those related to shortness of breath, emotional function and difficulties in adhering to treatment. Conclusion: The PedsQLTM Asthma Module SF22 is translated and transculturally adapted for the Brazilian population. In addition, the Brazilian version was able to provide valid and reliable measures for the assessment of the HRQOL of children and adolescents with asthma.