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.