Abstract
Background: Nocturnal symptoms are common and important in both asthma and COPD but the relationship between sleep quality and diseases9 characteristics has not been fully studied. Methods: A cross-sectional study of 217 asthma and COPD patients who underwent pulmonary function tests at the Center for Pathophysiology of Breathing and Sleep Medicine of the Institute for Pulmonary Diseases of Vojvodina, Sremska Kamenica, Serbia between July 2014 and January 2015. All patients completed Pittsburgh Sleep Quality Index (PSQI) and Epworth Sleepiness Scale (ESS). Results: The study included 117 (53.9%) patients with asthma and 100 (46.1%) patients with COPD. There were 109 (50.2 %) men, median age 56 years (IQR 35-64). There was no difference in PSQI (4.9±3.9 vs. 5.8±4.3, p=0.09) and ESS (4.8±3.4 vs. 4.7±3.6, p=0.69) between patients with asthma and COPD. There was a moderate correlation between PSQI and CAT score (r=0.51, p Conclusions: There is no difference in sleep quality between patients with asthma and COPD. PSQI correlates moderately with CAT score. Poor sleep quality is related to the level of asthma control and is associated with COPD groups B and D.
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