Medical records were reviewed for established diagnoses of comorbid lung diseases (eg, allergic bronchopulmonary aspergillosis, COPD, interstitial lung diseases); sleep-disordered breathing, including treatment; and comorbid illnesses known to worsen asthma control (gastroesophageal reflux disease [GERD]; rhinitis; chronic sinusitis; nasal polyposis; and psychiatric disease, such as depression, an