Validation of the Spanish language version of the control of allergic rhinitis and asthma test

Abstract

Abstract Allergic rhinitis and asthma are common diseases that frequently coexist, referred to as unified airway disease. There is currently no validated scale in Spanish, which allows simultaneous evaluation of both conditions. A translation from Portuguese to Spanish was therefore performed. It was administered to 120 patients aged between 18 and 70 years whose native language was Spanish and presented a diagnosis of allergic rhinitis and asthma. The reliability, validity and sensitivity to instrument change validations were carried out, as well as the values of minimally relevant clinical differences. Reliability was evaluated using Cronbach´s alpha test on CARAT-global: 0.83 [IC 95% 0.79–0.88]; test and retest evaluation was done with Pearson´s correlation coefficient: 0.6 [IC 95% 0.32–0.77] and the standard error of measurement 3.5 (p 16 In this case, CARAT10-asthma value < 16 are interpreted as an inadequate or partial control and values ≥ 16 mean an adequate control and CARAT10-global ≥ 18, patients evaluated with CARAT10 with a result ≥ 18, which would be a patient with both conditions controlled. The minimally relevant clinically important average difference found in the CARAT10 scale was 3.25 (SD 3.77). The CARAT10 scale in Spanish is a standardised, reliable and valid evaluation method on patients with unified airway disease.