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Ways of coping with asthma in everyday life: Validation of the Portuguese version

Background: This study aims to analyze the psychometric properties of Portuguese version of scale Ways of Coping with Asthma in Everyday Life – WCAEL (Aalto et al, 2002), developed to measure coping in everyday life in asthmatic adults. Methods: Cross-sectional study with 253 patients, both sexes, with asthma diagnose, recruited consecutively from the Allergy & Asthma outpatient clinic (HSJoao/Porto). Exclusion criterion were: psychiatry disease and alcohol/drugs abuse. A subsample of 247 patients were evaluated with the following scales (Portuguese versions): Ways of Coping with Asthma in Everyday Life - WCAEL, Problem Solving Inventory – PSI and Asthma Control Questionnaire – ACQ. A subsample of40 patients was reassessed after four weeks. These patients also were classified according severity of asthma (GINA, 2006) and the duration of the illness. Results: The participants were mostly females (78.5%), with a mean (sd) age of 40.6 (15.3) years. The majority (78.7%) had severe persistent asthma and the mean duration of the illness was 20.8 (15.4) years. In the final factor analysis of principal component method (varimax rotation) 4 factors were extracted (explaining 46.3% of total variance). The internal consistency values were moderate (α=0.56-0.77). WCAEL showed significant associations with ACQ, as well as good reproducibility over time (r s =0.58-0.76). Conclusion: This study data support the reliability, construct and criterion validity of the Portuguese version of WCAEL seems a promising scale for assessment the coping with asthma in everyday life.