Fig. 1

Flow chart of this study. In this cross-sectional study, we analyzed the differences in RBC count, HB concentration, and commonly used comprehensive inflammatory markers (NLR, MLR, PLR, SII, SIRI, PIV) between AD and control groups, and their correlation with the severity of cognitive impairment in AD patients. AD: Alzheimer’s disease; RBC: red blood cell; HB: hemoglobin; NLR: neutrophil/lymphocyte ratio; PLR: platelet/lymphocyte ratio; MLR: monocyte/lymphocyte ratio; SII: systemic immune inflammation index; SIRI: systemic inflammation response index; PIV: pan-immune-inflammation value.