Palliative Care Among Lung Cancer Patients With and Without COPD: A Population-Based Cohort Study
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CONTEXT: Lung cancer patients with chronic obstructive pulmonary disease (COPD) may have greater palliative care needs due to poor prognosis and symptom burden. OBJECTIVES: We sought to compare the provision of timely palliative care and symptom burden by COPD status. METHODS: We performed a retrospective, population-based cohort study of individuals diagnosed with lung cancer in Ontario, Canada (2009-2019) using health administrative databases and cancer registries. The impact of COPD on the probability of receiving palliative care was determined accounting for dying as a competing event, overall and stratified by stage. The provision of palliative care for patients with severe symptoms (Edmonton Symptom Assessment Scale score ≥ 7), location of the first palliative care visit and symptom severity were compared by COPD status. RESULTS: A total of 74,993 patients were included in the study (48% of patients had available symptom data). At the time of lung cancer diagnosis, 50% of patients had COPD. Stage I-III patients with COPD were more likely to receive palliative care (adjusted Hazard Ratio (HR)s: 1.05-1.31) with no difference for stage IV (1.02, 95% CI: 1.00-1.04). Despite having severe symptoms, very few patients with early-stage disease received palliative care (Stage I: COPD-23% vs. no COPD-18%, SMD = 0.12). Most patients (84%) reported severe symptoms and COPD worsened symptom burden, especially among early-stage patients. CONCLUSION: COPD impacts the receipt of palliative care and symptom burden for patients with early-stage lung cancer. Many patients with severe symptoms did not receive palliative care, suggesting unmet needs among this vulnerable population.
