Prognostic Nutritional Index and 90-Day Mortality in Super-Elderly Hip Fracture Patients

Delong Yin's research dataset from 2026 includes 614 patients aged 80 years or older with traumatic hip fractures. Data was collected retrospectively from a tertiary hospital (457 patients) and the MIMIC-IV database (157 patients). It contains admission laboratory values used to calculate the Prognostic Nutritional Index (PNI) and its association with 90-day all-cause mortality.

Use Cases

• Predicting 90-day mortality in elderly hip fracture patients based on admission PNI, hemoglobin, and creatinine.
• Evaluating the association between nutritional-immune status (via PNI) and short-term clinical outcomes.
• Developing early risk stratification tools using routine laboratory tests like serum albumin and lymphocyte count.
• Training survival analysis models using Cox proportional hazards on matched patient cohorts.

Strengths

• Dataset includes 614 patient records from two distinct sources (hospital and MIMIC-IV).
• Analysis includes robust statistical methods like LASSO regression and propensity score matching on 398 patients.
• Specific mortality rates are provided: 21.65% for low-PNI group vs. 9.40% for high-PNI group.

Limitations

• Row count for the underlying data tables is unknown, which may limit suitability assessment.
• Column-level documentation is absent; field semantics must be inferred after download.
• Data may reflect temporal and source bias inherent to the specific hospital and MIMIC-IV database.

Provenance

Source

Tertiary hospital and MIMIC-IV database.

Collection Method

Retrospective clinical study.

Freshness

Last updated 2026-04-17 04:11:43; freshness should be verified.