Meta-analysis of Platelet Lymphocyte Ratio as A Prognostic Factor for 
Non-small Cell Lung Cancer

Background and objective Current research shows that platelet to lymphocyte ratio (PLR) has important prognostic value in renal cell carcinoma, esophageal cancer, gastric cancer, liver cancer and colon cancer. The aim of the study is to evaluate the prognostic value of PLR in non-small cell lung cancer (NSCLC) through meta-analysis. Methods Literature search for PubMed, EMBASE, Web of Science, Medline, Cochrane Library, China National Knowledge Internet (CNKI), China Biomedical Medicine disc (CBMdisc), VIP, Wanfang Database using computer electronic system to study the association between PLR and overall survival (OS) and disease-free survival (DFS). Each eligible study data is extracted and a meta-analysis is performed using the hazard risk (HR) and 95% confidence interval (95%CI) to assess the prognostic value of PLR, the time limit for the search is to build the library until November 2018. Results We include a total of 15 research literatures involving 5,524 patients for meta-analysis. According to the results of the meta-analysis: The OS of the higher PLR group is significantly lower than that of the lower PLR group (HR=1.69, 95%CI: 1.45-1.97, P
Source: Chinese Journal of Lung Cancer - Category: Cancer & Oncology Source Type: research

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