The relationship of age, sex and prothrombin time related to the severity and mortality of COVID-19 patients with diabetes mellitus: a systematic review and meta analysis

"The relationship of age, sex and prothrombin time related to the severity and mortality of COVID-19 patients with diabetes mellitus" is a meta-analysis study that uses PRISMA guidelines with PRISMA flow chart and PRISMA checklist. The flowchart describes the process of data collection and extraction that contains details of the number of articles. PRISMA checklist contain 27-item checklist used to improve transparency in systematic reviews. These items cover all aspects of the manuscript, including title, abstract, introduction, methods, results, discussion, and funding.