A Combined Scoring System of Palliative Prognostic Index and Laboratory Prognostic Score

Area of Science:

• Oncology
• Palliative Care
• Biostatistics

Background:

• Accurate survival prediction is crucial for terminally ill cancer patients.
• Existing prognostic tools like the Palliative Prognostic Index (PPI) and Laboratory Prognostic Score (LPS) have limitations.
• Combining clinical and laboratory data may enhance prognostic accuracy.

Purpose of the Study:

• To evaluate the prognostic performance of a combined Palliative Prognostic Index-Laboratory Prognostic Score (PPI-LPS).
• To compare the PPI-LPS score against the PPI, LPS, and Palliative Prognostic Score (PaP).
• To assess the utility of the PPI-LPS score in predicting mortality and survival duration.

Main Methods:

• A combined PPI-LPS score was calculated by averaging scaled PPI and LPS values.
• 1061 terminally ill cancer patients in an acute care palliative unit were analyzed.
• Prognostic performance was assessed by discrimination of 30-, 60-, 90-day mortality, median survival prediction accuracy, and categorical survival classification.

Main Results:

• The PPI-LPS score showed the highest discriminative ability for 30-, 60-, and 90-day mortality (74%, 80%, 80% accuracy).
• It achieved superior accuracy in predicting median survival (34%) and categorical survival (61% agreement).
• The combined score outperformed individual scores (PPI, LPS, PaP) in all prognostic assessments.

Conclusions:

• The combined PPI-LPS score offers superior prognostic performance compared to existing tools.
• This simple, clinically useful tool can aid survival estimation in palliative care.
• The PPI-LPS score enhances prognostic accuracy for terminally ill cancer patients.