marginally significantp = 0.053
When categorized by quartiles, compared with Q1, Q4 of RDW was associated with a 2.31-fold increased risk (HR = 2.31, 95%CI: 1.08–4.95, p = 0.032) in the unadjusted model, which remained marginally significant after full adjustment (HR = 2.12, 95%CI: 0.99–4.54, p = 0.053).