“…The low correlation between the and proxy-rating in this study has also been reported previously for Physical and Emotion domains [17,18]. The domains Emotion, Treatment Burden, Social, Body Image also showed no correlation, as seen in the Spanish study and the study by Havermans, et al [20,26]. The positive association between scores in Respiration domain and spirometry [16] have also been previously reported [16,26], thereby validating CFQ-14+ showing correlation between pulmonary function and Respiration domain.…”