OSA in Never Smokers With Lung Cancer

Inclusion Criteria: \- Never smokers who are admitted to the Seoul National University Hospital and newly diagnosed with lung cancer, with ECOG Performance Status 0 or 1 Exclusion Criteria: * Patients who have received treatment for lung cancer before the enrollment * Patients who have received treatment for OSA before the enrollment * Patients with an expected life expectancy of less than 3 months * Patients with neuromuscular disease, chronic opioid medication use, or severe insomnia not controlled by medication * Patients receiving supplemental oxygen therapy due to underlying diseases including heart failure, chronic obstructive pulmonary disease, interstitial pulmonary disease, hypoventilation syndrome, stroke, or whose baseline oxygen saturation is less than 90% * Patients with unstable medical conditions within the preceding 3 months (hospitalization due to acute exacerbation of underlying lung disease, diagnosis of unstable angina or myocardial infarction, history of percutaneous coronary intervention or coronary artery bypass surgery, or diagnosis of transient ischemic attack or stroke) * Patients with an inability or unwillingness to provide informed consent