Association of Neutrophil-to-Lymphocyte Ratio with Disease Severity and Clinical Outcomes in COPD: A Retrospective Study Based on GOLD 2025 Classification
Objective: Chronic obstructive pulmonary disease (COPD) is a progressive disorder characterized by systemic inflammation. The neutrophil-to-lymphocyte ratio (NLR) has emerged as an easily accessible biomarker reflecting inflammatory burden. This study aimed to investigate the association between NLR and objective and c...