Validation of the Brazilian version of the childhood asthma control test (c-ACT)

Summary Background Children's perception of their symptoms has proved reliable and relevant to disease management and should be considered when assessing their asthma control. The aim of the study is to validate the Brazilian Portuguese version of the Childhood Asthma Control Test (c-ACT) in children aged 4–11 years. Methods This is a cross-sectional study in children diagnosed with asthma undergoing treatment in a pediatric pulmonology outpatient clinic in Porto Alegre, Brazil. The translation and linguistic adaptation of the instrument were performed in accordance with international recommendations for questionnaire validation. Results A total of 105 participants were included, aged 4–11 years. Validity: all correlations between the total score and items on the questionnaire were significant and obtained values of r ≥ 0.3, and c-ACT means showed statistically significant differences between the GINA categories (P