RDW Trajectories and Mortality in Sepsis Patients from MIMIC-IV and a Chinese Hospital

3,813 sepsis patients from the MIMIC-IV database and 467 from a Chinese hospital were analyzed for red blood cell distribution width (RDW) trajectories over the first 10 days of hospitalization. The study by Lei Cai, published in 2026, identified three distinct RDW trajectories and their associations with 30-day and 90-day mortality. The data likely contains longitudinal clinical measurements and patient outcomes.

Use Cases

• Predicting 30-day mortality in sepsis patients based on RDW trajectory patterns.
• Identifying high-risk sepsis patient subgroups for targeted intervention based on fluctuating biomarker trends.
• Validating prognostic models for sepsis using external clinical cohort data.
• Analyzing the relationship between longitudinal hematological marker changes and long-term (90-day) survival.

Strengths

• External validation performed on a separate cohort of 467 patients from a Chinese hospital.
• Analysis includes 3,813 sepsis patients from the widely-used MIMIC-IV clinical database.
• Trajectory groups are clearly defined with percentages: Slow-Decrease (32.97%), Slow-Increase (43.30%), Fluctuating-Rapid Decrease (23.73%).

Limitations

• Row count is unknown, which may limit suitability assessment.
• Column-level documentation is absent; field semantics must be inferred after download.
• The study notes its cohort may represent a more severely ill group due to RDW testing frequency, potentially limiting generalizability.

Provenance

Source

MIMIC-IV database and the First Affiliated Hospital of Kunming Medical University.

Collection Method

Retrospective cohort study using group-based trajectory modeling (GBTM).

Time Range

Covers the first 10 days of hospitalization for included sepsis patients.

Freshness

Last updated 2026-04-13 05:46:18; freshness should be verified.

Geography

Data from US (MIMIC-IV) and China (Kunming).