Abstract
Background
The association between the red cell distribution width (RDW) and long-term mortality in patients with intracerebral hemorrhage (ICH) has not been clearly established.
Methods
We conducted a retrospective cohort study of patients with ICH admitted to two tertiary hospitals. The primary outcome was long-term mortality, and the effect of elevated RDW (RDW coefficient of variation [RDW-CV]; RDW standard deviation [RDW-SD]) on outcomes was assessed by using logistic regression analysis. Serum RDW levels was divided into four levels by quartiles (the lowest quartile [Q1]; the highest quartile [Q4]).
Results
This study included 4223 patients with ICH. After adjustment for potential confounders, admission RDW-CV (Quartile 4 [Q4] vs. Quartile 1 [Q1], adjusted hazard ratio [HR] 1.61, 95% confidence interval [CI] 1.34–1.92) and median RDW-CV within the first month after admission (Q4 vs. Q1, adjusted HR 1.69, 95% CI 1.40–2.04) were both associated with 1-year mortality following ICH. Parallel results were found for RDW-SD. In the receiver operating characteristic analyses, both RDW-CV and RDW-SD outperformed some inflammatory biomarkers, such as albumin, hemoglobin, total cholesterol, platelet count, lymphocyte, and fibrinogen, in predicting long-term mortality following ICH. Additionally, compared with admission RDW, median RDW-CV and RDW-SD (areas under the curve [AUC] 0.668 and 0.652, respectively) was superior to predict long-term mortality, (P < 0.001). Furthermore, median RDW-CV level was a better predictor than RDW-SD (P = 0.03).
Conclusions
In patients with ICH, RDW independently predicted long-term mortality. Median RDW levels within the first month after admission were better predictors of long-term mortality compared with RDW levels on admission. Additionally, median RDW-CV showed superior predictive capacity than median RDW-SD for long-term mortality following ICH.
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Funding
This work was supported by the National Natural Science Foundation of China (NSFC) (no. 82271364); the innovation team project of the Affiliated Hospital of Clinical Medicine College of Chengdu University (no. CDFYCX202203); the project of Sichuan Science and Technology Bureau (no. 22ZDYF0798); the 1·3·5 Project for Disciplines of Excellence–Clinical Research Incubation Project, West China Hospital, Sichuan University (no. 21HXFH046); the Nursing Association of Sichuan Province (no. H21003); and the opening subject under KF-202204 in the State Key Laboratory of Pharmaceutical Biotechnology, Nanjing University, by an NSFC grant (no. 82074003).
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Study concept: C.F. Design: All authors. Acquisition, analysis, or interpretation of data: J.H., Y.Z., and H.P. Statistical analysis: J.H. and Y.Z. Drafting of the manuscript: J.H. and Y.Z. Critical revision of the manuscript for important intellectual content: All authors. The final manuscript was approved by all authors.
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The ethics committee of West China Hospital (No. 20211701), and the ethics committee of the First People’s Hospital of Longquanyi District, Chengdu (No. AF-KY-2022010) approved this study. Written informed consent was waived for the patients due to the retrospective design of the study.
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He, J., Zhang, Y., Hao, P. et al. Association Between Red Blood Cell Distribution width and Long-Term Mortality in Patients with Intracerebral Hemorrhage. Neurocrit Care (2023). https://doi.org/10.1007/s12028-023-01875-2
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DOI: https://doi.org/10.1007/s12028-023-01875-2