Association between red blood cell distribution width and ischemic stroke recurrence in patients with acute ischemic stroke: a 10-years retrospective cohort analysis.

Consistently, when RDW was assessed as quartiles, compared with the reference group (quartile 1, RDW ≤12.4%), the HRs of recurrence of ischemic stroke was 1.372 (95% CI=0.671–2.805, P=0.386) in quartile 2 (12.8%≥RDW>12.4%), 1.835 (95% CI=1.222–2.755, P=0.003) in quartile 3 (13.3%≥RDW>12.8%), and 1.732 (95% CI=1.114–2.561, P<0.001) in quartile 4 (RDW>13.3%), with a significant trend test (P<0.001) after adjusting for covariables.

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