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  • Title: Use of the Palliative Performance Scale (PPS) for end-of-life prognostication in a palliative medicine consultation service.
    Author: Lau F, Maida V, Downing M, Lesperance M, Karlson N, Kuziemsky C.
    Journal: J Pain Symptom Manage; 2009 Jun; 37(6):965-72. PubMed ID: 19232892.
    Abstract:
    This study examines the use of the Palliative Performance Scale (PPS) in end-of-life prognostication within a regional palliative care program in a Canadian province. The analysis was done on a prospective cohort of 513 patients assessed by a palliative care consult team as part of an initial community/hospital-based consult. The variables used were initial PPS score, age, gender, diagnosis, cancer type, and survival time. The findings revealed initial PPS to be a significant predictor of survival, along with age, diagnosis, cancer type and site, but not gender. The survival curves were distinct for PPS 10%, 20%, and 30% individually, and for 40%-60% and > or =70% as bands. This is consistent with earlier findings of the ambiguity and difficulty when assessing patients at higher PPS levels because of the subjective nature of the tool. We advocate the use of median survival and survival rates based on a local cohort where feasible, when reporting individual survival estimates.
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