The predictive value of neutrophil-to-lymphocyte ratio for chronic obstructive pulmonary disease: a systematic review and meta-analysis

Introduction There was inconsistent results regarding the associations of neutrophil to lymphocyte ratio (NLR) with the progression and prognosis of chronic obstructive pulmonary disease (COPD).Areas Covered This paper assess the role of NLR on the progression and prognosis of COPD using a meta-analytic approach. PubMed, EmBase, and the Cochrane library were systematically searched. The pooled weighted mean differences and odds ratios with 95%...