Eligibility Criteria
We included all the observational studies which examined the role of RDW and D-dimer as prognostic factors in DLBCL cases and also published in English without time and place restriction. On the other hand, studies such as case reports, case series, letters, and correspondence studies were among our exclusion criteria (Flowchart 1). The articles conducted regarding autoimmune diseases, Immunosuppression, patients with mental disorders, and those undergoing dialysis were excluded as well. In addition, the studies with lack of sufficient information on overall survival (OS) as well as progression-free-survival (PFS) of DLBCL subjects were excluded from the review process.