Conversion of Karnofsky Performance Status (Kps) and Eastern Cooperative Oncology Group Performance Status (Ecog) to Palliative Performance Scale (Pps), and the interchangeability of Pps and Kps in Prognostic Tools

DOI Web Site 1 Citations
  • Ingrid de Kock
    M Mirhosseini (corresponding author) Division of Palliative Care Medicine, Department of Oncology, University of Alberta, and Edmonton Zone Palliative Care Program, 335 St. Marguerite Health Services Centre, Grey Nuns Community Hospital, 1090 Youville Drive West, Edmonton, Alberta, Canada T6L 0A3;
  • Mehrnoush Mirhosseini
    Division of Palliative Care Medicine, Department of Oncology, University of Alberta, Edmonton Zone Palliative Care Program, Grey Nuns Community Hospital, Edmonton, Alberta, Canada
  • Francis Lau
    School of Health Information Science, University of Victoria, Victoria, British Columbia, Canada
  • Vincent Thai
    Division of Palliative Care Medicine, Department of Oncology, University of Alberta, Palliative Care Services, University of Alberta Hospital, Edmonton, Alberta, Canada
  • Michael Downing
    Division of Palliative Care, University of Victoria, Victoria, British Columbia, Canada
  • Hue Quan
    Edmonton Zone Palliative Care Program, Grey Nuns Community Hospital, Edmonton, Alberta, Canada
  • Mary Lesperance
    Department of Mathematics and Statistics, University of Victoria, Victoria, British Columbia, Canada
  • Ju Yang
    School of Health Information Science, University of Victoria, Victoria, British Columbia, Canada

Description

<jats:p> Aim: The aim of our study was to assess whether the Karnofsky Performance Status (KPS), the Eastern Cooperative Oncology Group (ECOG) Performance Status, and the Palliative Performance Scale (PPS) are interchangeable individually or within two prognostic tools: the Palliative Prognostic Score (PaP) and the Palliative Prognostic Index (PPI). Methods: We performed a subset analysis of a prospective comparative study of functional and prognostic tools and clinician prediction of survival. We studied 955 patients with advanced life-limiting illnesses (cancer and non-cancer) in the acute care and community settings. We used a descriptive statistical model and Spearman's rank correlation to assess these interchangeabilities. Results: There is a direct positive linear relationship between the KPS and the PPS, and a direct negative linear relationship between these tools and the ECOG. Exchange of the KPS and the PPS was possible within the PaP and the PPI. Conclusion: The PPS and the KPS can be used interchangeably as functional tools and within prognostic tools. The ECOG is interchangeable with the PPS and the KPS, but this interchange-ability is population-specific. </jats:p>

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