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 using th...
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| Format: | Article |
| Language: | English |
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Wiley
2019-01-01
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| Series: | Parkinson's Disease |
| Online Access: | http://dx.doi.org/10.1155/2019/1965394 |
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| author | John B. Wetmore José Matías Arbelo María José Catalán Francesc Valldeoriola Carmen Rodriguez-Blazquez Pablo Martinez-Martin |
| author_facet | John B. Wetmore José Matías Arbelo María José Catalán Francesc Valldeoriola Carmen Rodriguez-Blazquez Pablo Martinez-Martin |
| author_sort | John B. Wetmore |
| collection | DOAJ |
| 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 (rS = 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 | Article |
| id | doaj-art-01e9cd2102144e219bd4482e34d93d57 |
| institution | Kabale University |
| issn | 2090-8083 2042-0080 |
| language | English |
| publishDate | 2019-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Parkinson's Disease |
| spelling | doaj-art-01e9cd2102144e219bd4482e34d93d572025-02-03T01:22:17ZengWileyParkinson's Disease2090-80832042-00802019-01-01201910.1155/2019/19653941965394Psychometric Properties of the Apathy Scale in Advanced Parkinson’s DiseaseJohn B. Wetmore0José Matías Arbelo1María José Catalán2Francesc Valldeoriola3Carmen Rodriguez-Blazquez4Pablo Martinez-Martin5National Center of Epidemiology, Carlos III Institute of Health, Madrid 28029, SpainMovement Disorders Unit, Hospital Universitario Insular de Gran Canaria, Las Palmas de Gran Canaria 35016, SpainDepartment of Neurology, Hospital Clínico San Carlos, Madrid 28040, SpainDepartment of Neurology, Hospital Clínico de Barcelona, Barcelona 08036, SpainNational Center of Epidemiology, Carlos III Institute of Health, Madrid 28029, SpainNational Center of Epidemiology, Carlos III Institute of Health, Madrid 28029, SpainObjectives. 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 (rS = 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.http://dx.doi.org/10.1155/2019/1965394 |
| spellingShingle | John B. Wetmore José Matías Arbelo María José Catalán Francesc Valldeoriola Carmen Rodriguez-Blazquez Pablo Martinez-Martin Psychometric Properties of the Apathy Scale in Advanced Parkinson’s Disease 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 |
| url | http://dx.doi.org/10.1155/2019/1965394 |
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