Cross-cultural adaptation and validation of the Amsterdam Instrumental Activities of Daily Living questionnaire short version German for Switzerland
Abstract Background Instrumental Activities of Daily Living (IADL) limitations are associated with reduced health-related quality of life for people with mild cognitive impairment (MCI). For these people, the assessment of IADL is crucial to the diagnostic process, as well as for the evaluation of n...
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| Format: | Article |
| Language: | English |
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BMC
2020-10-01
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| Series: | Health and Quality of Life Outcomes |
| Subjects: | |
| Online Access: | http://link.springer.com/article/10.1186/s12955-020-01576-w |
| _version_ | 1818987183040626688 |
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| author | Marina Bruderer-Hofstetter Mark A. Dubbelman André Meichtry Florian Koehn Thomas Münzer Roos J. Jutten Philip Scheltens Sietske A. M. Sikkes Karin Niedermann |
| author_facet | Marina Bruderer-Hofstetter Mark A. Dubbelman André Meichtry Florian Koehn Thomas Münzer Roos J. Jutten Philip Scheltens Sietske A. M. Sikkes Karin Niedermann |
| author_sort | Marina Bruderer-Hofstetter |
| collection | DOAJ |
| description | Abstract Background Instrumental Activities of Daily Living (IADL) limitations are associated with reduced health-related quality of life for people with mild cognitive impairment (MCI). For these people, the assessment of IADL is crucial to the diagnostic process, as well as for the evaluation of new interventions addressing MCI. The Amsterdam IADL Questionnaire Short Version (A-IADL-Q-SV) is an established assessment tool with good psychometric properties that has been shown to be robust to cultural differences in Western countries. The aims of this study were to: (1) cross-culturally adapt and validate the A-IADL-Q-SV for the German-speaking population of Switzerland; (2) investigate its cultural comparability; and (3) evaluate further psychometric properties. Methods The A-IADL-Q-SV German was pretested on clinicians and participants in a memory clinic setting. The psychometric properties and cultural comparability of the questionnaire were investigated in memory clinic settings including participants with MCI or mild dementia, as well as participants with normal cognition recruited from the community. Item response theory (IRT) was applied to investigate measurement invariance by means of differential item functioning to assess item bias. Additionally, the test–retest reliability on scale level, the construct validity through hypothesis testing and the discriminant validity of the A-IADL-Q-SV German were evaluated. Results Ninety-six informants of participants with normal cognition, MCI or mild dementia completed the A-IADL-Q-SV German. The basic assumptions for IRT scoring were met. No meaningful differential item functioning for culture was detected between the Swiss and Dutch reference samples. High test–retest reliability on scale level (ICC 0.93; 95% CI 0.9–0.96) was found. More than 75% of the observed correlations between the A-IADL-Q-SV German and clinical measures of cognition and functional status were found to be in the direction and of the magnitude hypothesized. The A-IADL-Q-SV German was shown to be able to discriminate between participants with normal cognition and MCI, as well as MCI and mild dementia. Conclusions The A-IADL-Q-SV German is a psychometrically robust measurement tool for a Swiss population with normal cognition, MCI and mild dementia. Thus, it provides a valuable tool to assess IADL functioning in clinical practices and research settings in Switzerland. Trial registration This study was registered retrospectively in July 2019 on ClinicalTrials.gov (NCT04012398). |
| first_indexed | 2024-12-20T19:02:38Z |
| format | Article |
| id | doaj.art-8273b593aa4c44e0a3ba23e544dec8a2 |
| institution | Directory Open Access Journal |
| issn | 1477-7525 |
| language | English |
| last_indexed | 2024-12-20T19:02:38Z |
| publishDate | 2020-10-01 |
| publisher | BMC |
| record_format | Article |
| series | Health and Quality of Life Outcomes |
| spelling | doaj.art-8273b593aa4c44e0a3ba23e544dec8a22022-12-21T19:29:21ZengBMCHealth and Quality of Life Outcomes1477-75252020-10-0118111310.1186/s12955-020-01576-wCross-cultural adaptation and validation of the Amsterdam Instrumental Activities of Daily Living questionnaire short version German for SwitzerlandMarina Bruderer-Hofstetter0Mark A. Dubbelman1André Meichtry2Florian Koehn3Thomas Münzer4Roos J. Jutten5Philip Scheltens6Sietske A. M. Sikkes7Karin Niedermann8School of Health Professions, Institute of Physiotherapy, Zurich University of Applied SciencesAlzheimer Center Amsterdam, Department of Neurology, Amsterdam Neuroscience, Vrije Universiteit Amsterdam, Amsterdam UMCSchool of Health Professions, Institute of Physiotherapy, Zurich University of Applied SciencesGeriatrische Klinik St. GallenGeriatrische Klinik St. GallenAlzheimer Center Amsterdam, Department of Neurology, Amsterdam Neuroscience, Vrije Universiteit Amsterdam, Amsterdam UMCAlzheimer Center Amsterdam, Department of Neurology, Amsterdam Neuroscience, Vrije Universiteit Amsterdam, Amsterdam UMCAlzheimer Center Amsterdam, Department of Neurology, Amsterdam Neuroscience, Vrije Universiteit Amsterdam, Amsterdam UMCSchool of Health Professions, Institute of Physiotherapy, Zurich University of Applied SciencesAbstract Background Instrumental Activities of Daily Living (IADL) limitations are associated with reduced health-related quality of life for people with mild cognitive impairment (MCI). For these people, the assessment of IADL is crucial to the diagnostic process, as well as for the evaluation of new interventions addressing MCI. The Amsterdam IADL Questionnaire Short Version (A-IADL-Q-SV) is an established assessment tool with good psychometric properties that has been shown to be robust to cultural differences in Western countries. The aims of this study were to: (1) cross-culturally adapt and validate the A-IADL-Q-SV for the German-speaking population of Switzerland; (2) investigate its cultural comparability; and (3) evaluate further psychometric properties. Methods The A-IADL-Q-SV German was pretested on clinicians and participants in a memory clinic setting. The psychometric properties and cultural comparability of the questionnaire were investigated in memory clinic settings including participants with MCI or mild dementia, as well as participants with normal cognition recruited from the community. Item response theory (IRT) was applied to investigate measurement invariance by means of differential item functioning to assess item bias. Additionally, the test–retest reliability on scale level, the construct validity through hypothesis testing and the discriminant validity of the A-IADL-Q-SV German were evaluated. Results Ninety-six informants of participants with normal cognition, MCI or mild dementia completed the A-IADL-Q-SV German. The basic assumptions for IRT scoring were met. No meaningful differential item functioning for culture was detected between the Swiss and Dutch reference samples. High test–retest reliability on scale level (ICC 0.93; 95% CI 0.9–0.96) was found. More than 75% of the observed correlations between the A-IADL-Q-SV German and clinical measures of cognition and functional status were found to be in the direction and of the magnitude hypothesized. The A-IADL-Q-SV German was shown to be able to discriminate between participants with normal cognition and MCI, as well as MCI and mild dementia. Conclusions The A-IADL-Q-SV German is a psychometrically robust measurement tool for a Swiss population with normal cognition, MCI and mild dementia. Thus, it provides a valuable tool to assess IADL functioning in clinical practices and research settings in Switzerland. Trial registration This study was registered retrospectively in July 2019 on ClinicalTrials.gov (NCT04012398).http://link.springer.com/article/10.1186/s12955-020-01576-wInstrumental Activities of Daily Living (IADL)AssessmentAmsterdam IADL questionnaireCross-cultural validationElderly peopleMild cognitive impairment (MCI) |
| spellingShingle | Marina Bruderer-Hofstetter Mark A. Dubbelman André Meichtry Florian Koehn Thomas Münzer Roos J. Jutten Philip Scheltens Sietske A. M. Sikkes Karin Niedermann Cross-cultural adaptation and validation of the Amsterdam Instrumental Activities of Daily Living questionnaire short version German for Switzerland Health and Quality of Life Outcomes Instrumental Activities of Daily Living (IADL) Assessment Amsterdam IADL questionnaire Cross-cultural validation Elderly people Mild cognitive impairment (MCI) |
| title | Cross-cultural adaptation and validation of the Amsterdam Instrumental Activities of Daily Living questionnaire short version German for Switzerland |
| title_full | Cross-cultural adaptation and validation of the Amsterdam Instrumental Activities of Daily Living questionnaire short version German for Switzerland |
| title_fullStr | Cross-cultural adaptation and validation of the Amsterdam Instrumental Activities of Daily Living questionnaire short version German for Switzerland |
| title_full_unstemmed | Cross-cultural adaptation and validation of the Amsterdam Instrumental Activities of Daily Living questionnaire short version German for Switzerland |
| title_short | Cross-cultural adaptation and validation of the Amsterdam Instrumental Activities of Daily Living questionnaire short version German for Switzerland |
| title_sort | cross cultural adaptation and validation of the amsterdam instrumental activities of daily living questionnaire short version german for switzerland |
| topic | Instrumental Activities of Daily Living (IADL) Assessment Amsterdam IADL questionnaire Cross-cultural validation Elderly people Mild cognitive impairment (MCI) |
| url | http://link.springer.com/article/10.1186/s12955-020-01576-w |
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