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Psychometric Properties of the Apathy Scale in Advanced Parkinson's Disease
OBJECTIVES: To assess the psychometric attributes of the Apathy Scale- (AS-) Spanish version in patients with advanced Parkinson's disease (APD). MATERIALS AND METHODS: Over 6 months, 61 patients participated in a clinical study of levodopa-carbidopa intestinal gel (LCIG) and were evaluated usi...
Autores principales: | , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Hindawi
2019
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6458845/ https://www.ncbi.nlm.nih.gov/pubmed/31031906 http://dx.doi.org/10.1155/2019/1965394 |
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author | Wetmore, John B. Arbelo, José Matías Catalán, María José Valldeoriola, Francesc Rodriguez-Blazquez, Carmen Martinez-Martin, Pablo |
author_facet | Wetmore, John B. Arbelo, José Matías Catalán, María José Valldeoriola, Francesc Rodriguez-Blazquez, Carmen Martinez-Martin, Pablo |
author_sort | Wetmore, John B. |
collection | PubMed |
description | OBJECTIVES: To assess the psychometric attributes of the Apathy Scale- (AS-) Spanish version in patients with advanced Parkinson's disease (APD). MATERIALS AND METHODS: Over 6 months, 61 patients participated in a clinical study of levodopa-carbidopa intestinal gel (LCIG) and were evaluated using the AS and other clinical tools. Various psychometric attributes of the AS were assessed. RESULTS: Patients (60.7% men) were aged 68.02 ± 7.43 years, with 12.57 ± 5.97 years from PD diagnosis. Median HY of patients in “on state” was 2 (range, 1–4), and mean levodopa equivalent daily dose was 1455.98 ± 456.00 mg. Overall, the parameters of feasibility/acceptability were satisfactory, except for a moderate-to-high floor effect in AS items but not in its total score (both 3.3%). Cronbach's alpha was 0.78, while item homogeneity coefficient was 0.21. Almost all items (11/14) reached acceptable item-total corrected correlations (r(S) = 0.16–0.50). AS total score was moderately correlated with Beck Depression Inventory (0.34) and with Non-Motor Symptoms Scale domains 2 (sleep/fatigue, 0.35), 3 (mood/apathy, 0.56), and 5 (attention/memory, 0.41). There were no significant differences between AS total scores by established groups of sex, time from diagnosis, HY, and Clinical Global Impression-Severity Scale. Following LCIG treatment, there was no significant change in the AS total score. The relative change was 5.56%, the standard error of the difference was 4.17, and Cohen's d effect was 0.10. CONCLUSIONS: The AS showed satisfactory feasibility, acceptability, scaling assumptions, internal consistency, and convergent validity. Responsiveness parameters were poor, probably due to the characteristics of the clinical study from which these data came. This trial is registered with NCT02289729. |
format | Online Article Text |
id | pubmed-6458845 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2019 |
publisher | Hindawi |
record_format | MEDLINE/PubMed |
spelling | pubmed-64588452019-04-28 Psychometric Properties of the Apathy Scale in Advanced Parkinson's Disease Wetmore, John B. Arbelo, José Matías Catalán, María José Valldeoriola, Francesc Rodriguez-Blazquez, Carmen Martinez-Martin, Pablo Parkinsons Dis Research Article OBJECTIVES: To assess the psychometric attributes of the Apathy Scale- (AS-) Spanish version in patients with advanced Parkinson's disease (APD). MATERIALS AND METHODS: Over 6 months, 61 patients participated in a clinical study of levodopa-carbidopa intestinal gel (LCIG) and were evaluated using the AS and other clinical tools. Various psychometric attributes of the AS were assessed. RESULTS: Patients (60.7% men) were aged 68.02 ± 7.43 years, with 12.57 ± 5.97 years from PD diagnosis. Median HY of patients in “on state” was 2 (range, 1–4), and mean levodopa equivalent daily dose was 1455.98 ± 456.00 mg. Overall, the parameters of feasibility/acceptability were satisfactory, except for a moderate-to-high floor effect in AS items but not in its total score (both 3.3%). Cronbach's alpha was 0.78, while item homogeneity coefficient was 0.21. Almost all items (11/14) reached acceptable item-total corrected correlations (r(S) = 0.16–0.50). AS total score was moderately correlated with Beck Depression Inventory (0.34) and with Non-Motor Symptoms Scale domains 2 (sleep/fatigue, 0.35), 3 (mood/apathy, 0.56), and 5 (attention/memory, 0.41). There were no significant differences between AS total scores by established groups of sex, time from diagnosis, HY, and Clinical Global Impression-Severity Scale. Following LCIG treatment, there was no significant change in the AS total score. The relative change was 5.56%, the standard error of the difference was 4.17, and Cohen's d effect was 0.10. CONCLUSIONS: The AS showed satisfactory feasibility, acceptability, scaling assumptions, internal consistency, and convergent validity. Responsiveness parameters were poor, probably due to the characteristics of the clinical study from which these data came. This trial is registered with NCT02289729. Hindawi 2019-03-28 /pmc/articles/PMC6458845/ /pubmed/31031906 http://dx.doi.org/10.1155/2019/1965394 Text en Copyright © 2019 John B. Wetmore et al. http://creativecommons.org/licenses/by/4.0/ This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. |
spellingShingle | Research Article Wetmore, John B. Arbelo, José Matías Catalán, María José Valldeoriola, Francesc Rodriguez-Blazquez, Carmen Martinez-Martin, Pablo Psychometric Properties of the Apathy Scale in Advanced Parkinson's Disease |
title | Psychometric Properties of the Apathy Scale in Advanced Parkinson's Disease |
title_full | Psychometric Properties of the Apathy Scale in Advanced Parkinson's Disease |
title_fullStr | Psychometric Properties of the Apathy Scale in Advanced Parkinson's Disease |
title_full_unstemmed | Psychometric Properties of the Apathy Scale in Advanced Parkinson's Disease |
title_short | Psychometric Properties of the Apathy Scale in Advanced Parkinson's Disease |
title_sort | psychometric properties of the apathy scale in advanced parkinson's disease |
topic | Research Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6458845/ https://www.ncbi.nlm.nih.gov/pubmed/31031906 http://dx.doi.org/10.1155/2019/1965394 |
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