Description of the components of the PPI: a scoring system for survival prediction of terminally ill cancer patients. The scores from each prognostic domain are added. A score of 0 to 2.0 was associated with a median survival of 90 days; score of 2.1 to 4.0, 61 days; score >4.0, 12 days.
* The palliative performance status represents a modified version of the Karnofsky Performance Scale (KPS), which grades patients' general conditions on a scale from 0 (death) to 100 (normal).
