Assessment of hemoglobin-to-red cell distribution width ratio to predict all-cause mortality in patients with sepsis: a retrospective cohort study from the MIMIC-IV database - Report - MDSpire

Assessment of hemoglobin-to-red cell distribution width ratio to predict all-cause mortality in patients with sepsis: a retrospective cohort study from the MIMIC-IV database

  • By

  • Zhiwei Su

  • Yin Wen

  • Wenhong Zhong

  • Hongguang Ding

  • Hongke Zeng

  • July 13, 2026

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Clinical Report: Evaluation of the Hemoglobin-to-Red Cell Distribution Width Ratio as a Predictor of All-Cause Mortality in Sepsis Patients

Overview

This study investigates the Hemoglobin-to-Red Cell Distribution Width Ratio (HRR) as a prognostic indicator for 28-day mortality in sepsis patients using data from the MIMIC-IV database. Findings indicate that a higher HRR correlates with lower mortality rates.

Background

Sepsis is a critical condition with high mortality rates, necessitating effective prognostic tools for better patient management. The HRR may reflect both inflammatory and nutritional status, which are crucial in sepsis prognosis.

Data Highlights

Group28-Day Mortality Rate
High-score20.23%
Low-score25.72%

Key Findings

  • The study included 28,812 sepsis patients, with a 28-day mortality rate of 19.77%.
  • Post-propensity score matching, the high-score HRR group had a significantly lower mortality rate compared to the low-score group (20.23% vs. 25.72%, P < 0.05).
  • Cox proportional hazards regression indicated that the high-score group had a reduced risk of 28-day mortality (HR, 0.73; 95% CI, 0.68–0.79).
  • Threshold analysis identified 0.78 as the inflection point for HRR, below which each unit increase in HRR correlated with a 26% decrease in mortality risk (HR, 0.26; 95% CI, 0.19–0.38).
  • Integrating HRR with disease severity scores enhances predictive accuracy for 28-day mortality.

Clinical Implications

The HRR may aid clinicians in risk stratification for sepsis.

Conclusion

The HRR demonstrates a significant negative correlation with 28-day mortality in sepsis patients.

Related Resources & Content

  1. ZhiWei Su, MIMIC-IV Database, 2023 -- Evaluation of the Hemoglobin-to-Red Cell Distribution Width Ratio as a Predictor of All-Cause Mortality in Sepsis Patients
  2. Frontiers in Medicine — The Prognostic Value of Red Cell Distribution Width-to-Albumin Ratio for 28-Day Mortality in Sepsis Patients: A Multicenter Analysis Based on the eICU Collaborative Research Database
  3. Frontiers in Medicine — Hematologic and metabolic indices for predicting 28-day mortality in sepsis patients: a retrospective intensive care cohort study
  4. Frontiers in Medicine — Comparative predictive value of nine inflammation-derived haematological indices for 28-day mortality in patients with sepsis: a multicentre retrospective cohort study
  5. Frontiers in Medicine — Hemoglobin glycation index and short-term mortality in sepsis: a retrospective cohort study with external validation
  6. Surviving Sepsis Campaign Adult Guidelines | SCCM
  7. Overview | Suspected sepsis in people aged 16 or over: recognition, assessment and early management | Guidance | NICE
  8. Diagnostic value of RDW for the prediction of mortality in adult sepsis patients: A systematic review and meta-analysis - PMC
  9. Frontiers | The prognostic value of red cell distribution width-to-albumin ratio for 28-day mortality in sepsis patients: a multicenter analysis based on the eICU Collaborative Research Database
  10. Association between hemoglobin and in-hospital mortality in critically ill patients with sepsis: evidence from two large databases - PubMed
  11. The Hemoglobin-to-Red Cell Distribution Width Ratio to Predict All-Cause Mortality in Patients with Sepsis-Associated Encephalopathy in the MIMIC-IV Database - PMC
  12. MIMIC-IV v2.2

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