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Spanish modified version of the palliative care outcome scale–symptoms renal: cross-cultural adaptation and validation
BACKGROUND: Patients with chronic kidney disease (CKD) have a high symptoms burden that is related to a poor health-related quality of life (HRQoL) and high costs of care. Validated instruments may be useful for assessing the symptoms and monitoring outcomes in these patients. The Palliative care Ou...
Autores principales: | , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
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BioMed Central
2016
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5116210/ https://www.ncbi.nlm.nih.gov/pubmed/27863475 http://dx.doi.org/10.1186/s12882-016-0402-8 |
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author | Gutiérrez-Sánchez, Daniel Leiva-Santos, Juan P. Sánchez-Hernández, Rosa Hernández-Marrero, Domingo Cuesta-Vargas, Antonio I. |
author_facet | Gutiérrez-Sánchez, Daniel Leiva-Santos, Juan P. Sánchez-Hernández, Rosa Hernández-Marrero, Domingo Cuesta-Vargas, Antonio I. |
author_sort | Gutiérrez-Sánchez, Daniel |
collection | PubMed |
description | BACKGROUND: Patients with chronic kidney disease (CKD) have a high symptoms burden that is related to a poor health-related quality of life (HRQoL) and high costs of care. Validated instruments may be useful for assessing the symptoms and monitoring outcomes in these patients. The Palliative care Outcome Scale-Symptoms Renal (POS-S Renal) is a patient-reported outcome measure for assessing symptoms in CKD stage 4–5. This study is the first cross-cultural adaptation and psychometric analysis of this clinical tool. The purpose of this study is to carry out a cross-cultural adaptation of the POS-S Renal for Spanish-speaking patients, and to perform an analysis of the psychometric properties of this questionnaire. METHODS: The English version of the POS-S Renal was culturally adapted and translated into Spanish using a double forward and backward method. An expert panel evaluated the content validity. The questionnaire was pilot-tested in 30 patients. A total of 200 patients with CKD stage 4–5 filled in a modified Spanish version of the POS-S Renal and the MSAS-SF. Statistical analysis to evaluate the psychometric properties of the questionnaire was carried out. RESULTS: The content validity index (CVI) was 0.97, which indicated that the content of the instrument is an adequate reflection of the symptoms in advanced CKD (ACKD). The factor analysis indicated a two-factor solution explaining 35.05% of total variance. The confirmatory factor analysis (CFA) demonstrated that the two factor model was well supported (comparative fit index = 0.98, root mean square error of approximation = 0.068). This assessment tool demonstrated a satisfactory test–retest reliability (r = 0.909 to factor 1, r = 0.695 to factor 2, r = 0.887 to total score), good internal consistency to factor 1 (α = 0.78) and moderate internal consistency to factor 2 (α = 0.56). Concurrent criterion-related validity with MSAS-SF was also demonstrated, with r = 0.860, which indicated a high degree of correlation with a validated instrument that has been used in patients with ACKD. CONCLUSIONS: The Spanish modified version of the POS-S Renal is a reliable and valid instrument that can be used to assess symptoms in Spanish patients with CKD stage 4–5. ELECTRONIC SUPPLEMENTARY MATERIAL: The online version of this article (doi:10.1186/s12882-016-0402-8) contains supplementary material, which is available to authorized users. |
format | Online Article Text |
id | pubmed-5116210 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2016 |
publisher | BioMed Central |
record_format | MEDLINE/PubMed |
spelling | pubmed-51162102016-11-25 Spanish modified version of the palliative care outcome scale–symptoms renal: cross-cultural adaptation and validation Gutiérrez-Sánchez, Daniel Leiva-Santos, Juan P. Sánchez-Hernández, Rosa Hernández-Marrero, Domingo Cuesta-Vargas, Antonio I. BMC Nephrol Research Article BACKGROUND: Patients with chronic kidney disease (CKD) have a high symptoms burden that is related to a poor health-related quality of life (HRQoL) and high costs of care. Validated instruments may be useful for assessing the symptoms and monitoring outcomes in these patients. The Palliative care Outcome Scale-Symptoms Renal (POS-S Renal) is a patient-reported outcome measure for assessing symptoms in CKD stage 4–5. This study is the first cross-cultural adaptation and psychometric analysis of this clinical tool. The purpose of this study is to carry out a cross-cultural adaptation of the POS-S Renal for Spanish-speaking patients, and to perform an analysis of the psychometric properties of this questionnaire. METHODS: The English version of the POS-S Renal was culturally adapted and translated into Spanish using a double forward and backward method. An expert panel evaluated the content validity. The questionnaire was pilot-tested in 30 patients. A total of 200 patients with CKD stage 4–5 filled in a modified Spanish version of the POS-S Renal and the MSAS-SF. Statistical analysis to evaluate the psychometric properties of the questionnaire was carried out. RESULTS: The content validity index (CVI) was 0.97, which indicated that the content of the instrument is an adequate reflection of the symptoms in advanced CKD (ACKD). The factor analysis indicated a two-factor solution explaining 35.05% of total variance. The confirmatory factor analysis (CFA) demonstrated that the two factor model was well supported (comparative fit index = 0.98, root mean square error of approximation = 0.068). This assessment tool demonstrated a satisfactory test–retest reliability (r = 0.909 to factor 1, r = 0.695 to factor 2, r = 0.887 to total score), good internal consistency to factor 1 (α = 0.78) and moderate internal consistency to factor 2 (α = 0.56). Concurrent criterion-related validity with MSAS-SF was also demonstrated, with r = 0.860, which indicated a high degree of correlation with a validated instrument that has been used in patients with ACKD. CONCLUSIONS: The Spanish modified version of the POS-S Renal is a reliable and valid instrument that can be used to assess symptoms in Spanish patients with CKD stage 4–5. ELECTRONIC SUPPLEMENTARY MATERIAL: The online version of this article (doi:10.1186/s12882-016-0402-8) contains supplementary material, which is available to authorized users. BioMed Central 2016-11-18 /pmc/articles/PMC5116210/ /pubmed/27863475 http://dx.doi.org/10.1186/s12882-016-0402-8 Text en © The Author(s). 2016 Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated. |
spellingShingle | Research Article Gutiérrez-Sánchez, Daniel Leiva-Santos, Juan P. Sánchez-Hernández, Rosa Hernández-Marrero, Domingo Cuesta-Vargas, Antonio I. Spanish modified version of the palliative care outcome scale–symptoms renal: cross-cultural adaptation and validation |
title | Spanish modified version of the palliative care outcome scale–symptoms renal: cross-cultural adaptation and validation |
title_full | Spanish modified version of the palliative care outcome scale–symptoms renal: cross-cultural adaptation and validation |
title_fullStr | Spanish modified version of the palliative care outcome scale–symptoms renal: cross-cultural adaptation and validation |
title_full_unstemmed | Spanish modified version of the palliative care outcome scale–symptoms renal: cross-cultural adaptation and validation |
title_short | Spanish modified version of the palliative care outcome scale–symptoms renal: cross-cultural adaptation and validation |
title_sort | spanish modified version of the palliative care outcome scale–symptoms renal: cross-cultural adaptation and validation |
topic | Research Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5116210/ https://www.ncbi.nlm.nih.gov/pubmed/27863475 http://dx.doi.org/10.1186/s12882-016-0402-8 |
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