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A reliability and validity study of the Palliative Performance Scale

BACKGROUND: The Palliative Performance Scale (PPS) was first introduced in1996 as a new tool for measurement of performance status in palliative care. PPS has been used in many countries and has been translated into other languages. METHODS: This study evaluated the reliability and validity of PPS....

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Autores principales: Ho, Francis, Lau, Francis, Downing, Michael G, Lesperance, Mary
Formato: Texto
Lenguaje:English
Publicado: BioMed Central 2008
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2527603/
https://www.ncbi.nlm.nih.gov/pubmed/18680590
http://dx.doi.org/10.1186/1472-684X-7-10
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author Ho, Francis
Lau, Francis
Downing, Michael G
Lesperance, Mary
author_facet Ho, Francis
Lau, Francis
Downing, Michael G
Lesperance, Mary
author_sort Ho, Francis
collection PubMed
description BACKGROUND: The Palliative Performance Scale (PPS) was first introduced in1996 as a new tool for measurement of performance status in palliative care. PPS has been used in many countries and has been translated into other languages. METHODS: This study evaluated the reliability and validity of PPS. A web-based, case scenarios study with a test-retest format was used to determine reliability. Fifty-three participants were recruited and randomly divided into two groups, each evaluating 11 cases at two time points. The validity study was based on the content validation of 15 palliative care experts conducted over telephone interviews, with discussion on five themes: PPS as clinical assessment tool, the usefulness of PPS, PPS scores affecting decision making, the problems in using PPS, and the adequacy of PPS instruction. RESULTS: The intraclass correlation coefficients for absolute agreement were 0.959 and 0.964 for Group 1, at Time-1 and Time-2; 0.951 and 0.931 for Group 2, at Time-1 and Time-2 respectively. Results showed that the participants were consistent in their scoring over the two times, with a mean Cohen's kappa of 0.67 for Group 1 and 0.71 for Group 2. In the validity study, all experts agreed that PPS is a valuable clinical assessment tool in palliative care. Many of them have already incorporated PPS as part of their practice standard. CONCLUSION: The results of the reliability study demonstrated that PPS is a reliable tool. The validity study found that most experts did not feel a need to further modify PPS and, only two experts requested that some performance status measures be defined more clearly. Areas of PPS use include prognostication, disease monitoring, care planning, hospital resource allocation, clinical teaching and research. PPS is also a good communication tool between palliative care workers.
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spelling pubmed-25276032008-09-02 A reliability and validity study of the Palliative Performance Scale Ho, Francis Lau, Francis Downing, Michael G Lesperance, Mary BMC Palliat Care Research Article BACKGROUND: The Palliative Performance Scale (PPS) was first introduced in1996 as a new tool for measurement of performance status in palliative care. PPS has been used in many countries and has been translated into other languages. METHODS: This study evaluated the reliability and validity of PPS. A web-based, case scenarios study with a test-retest format was used to determine reliability. Fifty-three participants were recruited and randomly divided into two groups, each evaluating 11 cases at two time points. The validity study was based on the content validation of 15 palliative care experts conducted over telephone interviews, with discussion on five themes: PPS as clinical assessment tool, the usefulness of PPS, PPS scores affecting decision making, the problems in using PPS, and the adequacy of PPS instruction. RESULTS: The intraclass correlation coefficients for absolute agreement were 0.959 and 0.964 for Group 1, at Time-1 and Time-2; 0.951 and 0.931 for Group 2, at Time-1 and Time-2 respectively. Results showed that the participants were consistent in their scoring over the two times, with a mean Cohen's kappa of 0.67 for Group 1 and 0.71 for Group 2. In the validity study, all experts agreed that PPS is a valuable clinical assessment tool in palliative care. Many of them have already incorporated PPS as part of their practice standard. CONCLUSION: The results of the reliability study demonstrated that PPS is a reliable tool. The validity study found that most experts did not feel a need to further modify PPS and, only two experts requested that some performance status measures be defined more clearly. Areas of PPS use include prognostication, disease monitoring, care planning, hospital resource allocation, clinical teaching and research. PPS is also a good communication tool between palliative care workers. BioMed Central 2008-08-04 /pmc/articles/PMC2527603/ /pubmed/18680590 http://dx.doi.org/10.1186/1472-684X-7-10 Text en Copyright © 2008 Ho et al; licensee BioMed Central Ltd. http://creativecommons.org/licenses/by/2.0 This is an Open Access article distributed under the terms of the Creative Commons Attribution License ( (http://creativecommons.org/licenses/by/2.0) ), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
spellingShingle Research Article
Ho, Francis
Lau, Francis
Downing, Michael G
Lesperance, Mary
A reliability and validity study of the Palliative Performance Scale
title A reliability and validity study of the Palliative Performance Scale
title_full A reliability and validity study of the Palliative Performance Scale
title_fullStr A reliability and validity study of the Palliative Performance Scale
title_full_unstemmed A reliability and validity study of the Palliative Performance Scale
title_short A reliability and validity study of the Palliative Performance Scale
title_sort reliability and validity study of the palliative performance scale
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2527603/
https://www.ncbi.nlm.nih.gov/pubmed/18680590
http://dx.doi.org/10.1186/1472-684X-7-10
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