A new informant‐based questionnaire for instrumental activities of daily living in dementia

Sikkes, Sietske A.M.; Klerk, Elly S.M. de Lange–de; Pijnenburg, Yolande A.L.; Gillissen, Freek; Romkes, Rolinka; Knol, Dirk L.; Uitdehaag, Bernard M. J.; Scheltens, Philip

doi:10.1016/j.jalz.2011.08.006

Cited by 100 publications

(122 citation statements)

References 40 publications

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“…This assessment method optimizes the individual differences in complex daily activities. The median time to complete the questionnaire was 23 min (interquartile range 17-29) [6]. The online supplementary figure shows an example item of the questionnaire (for all online supplementary material, see www.…”

Section: Methodsmentioning

confidence: 99%

“…Based on this need for a reliable and valid IADL questionnaire, a new questionnaire was recently developed [6]. In a previous study, we showed that the Amsterdam IADL Questionnaire© (a registered copyright of the Alzheimer Center of the VU University Medical Center) had good content validity, consisted of a single factor, had a high internal consistency and good test-retest reliability [6].…”

Section: Introductionmentioning

confidence: 99%

“…We defined the construct being measured as ‘complex activities with little automated skills for which multiple cognitive processes are necessary' [6]. In this study, we intend to provide a comprehensive test of validity.…”

Section: Introductionmentioning

confidence: 99%

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Validation of the Amsterdam IADL Questionnaire©, a New Tool to Measure Instrumental Activities of Daily Living in Dementia

et al. 2013

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Background: This study describes the validation of a new instrument measuring instrumental activities of daily living (IADL), the Amsterdam IADL Questionnaire© (a registered copyright of the Alzheimer Center of the VU University Medical Center). This informant-based tool aimed at detecting IADL problems in incipient dementia was previously found to have a high internal consistency and test-retest reliability. Methods: Patients and their informants who visited the Alzheimer Center of the VU University Medical Center were included in this study. Item response theory was used to estimate the individuals' trait levels as a measure of IADL disability. Construct validity was tested by correlating estimated trait levels with clinical and demographic measures using Pearson's or Kendall's τ correlation coefficients. Additionally, estimated trait levels between patients with and without dementia and between patients with early- and late-onset dementia were compared using independent t tests. Results: A total of 206 informants of patients completed the Amsterdam IADL Questionnaire. The correlations between estimated trait levels and other measures were in concordance with previously formed hypotheses. Patients diagnosed with dementia (n = 93) had higher estimated trait levels than patients without dementia (n = 96), Cohen's effect size, d = 1.04, t(187) = 7.1, p < 0.001. We found no differences between early- and late-onset dementia patients. Conclusions: Results suggest that the Amsterdam IADL Questionnaire is a reliable and valid instrument in the evaluation of dementia.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Validation of the Amsterdam IADL Questionnaire©, a New Tool to Measure Instrumental Activities of Daily Living in Dementia

et al. 2013

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“…Therefore, we do not think that this issue might have affected our results. We do suggest that future studies explore the possibility to use more elaborate ADL and IADL function tests [29,30] to further elucidate the role of impaired eye-hand coordination in developing functional disability. Finally, in this study we used a combination of an eye tracking system, a motion detection system, and a touch screen to quantify characteristics of eye-hand coordinated movements.…”

Section: Discussionmentioning

confidence: 99%

Delays in Manual Reaching Are Associated with Impaired Functional Abilities in Early Dementia Patients

Boer

Pel²,

Steen³

et al. 2015

Dement Geriatr Cogn Disord

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Background/Aims: Recent evidence shows that early dementia patients have deficits in manual reaching tasks. It is important to understand the impact of these functional disabilities on their quality of life. The aim of this study was to investigate if there is an association between manual reaching and measures of (instrumental) activities of daily living (IADL) in a group of patients with cognitive complaints. Methods: The manual reaching performance of 27 patients was assessed in detail with eye and hand tracking devices. Patients were divided into three groups based on self-reported loss of IADL function. Parameters describing hand response and movement times were compared between groups. Results: Patients with loss of IADL function in ≥1 domain had delayed hand response and hand movement times towards visible targets compared to patients with no loss of IADL function. Conclusion: Delays in manual reaching movements are related to the degree of loss of IADL function in early dementia patients.

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“…Since the Karnofsky Performance Status scale neither reflects neurological impairment such as hemiparesis nor cognitive deficit, its use for brain tumor patients to determine performance status is limited. Possibly specific activity of daily living scales, such as an instrumental activity of daily living scale developed for dementia, should be developed for brain tumor patients [14].…”

mentioning

confidence: 99%

Patient-oriented outcome measures in brain tumor patients: catching up after a slow start

Taphoorn¹

2012

Expert Review of Pharmacoeconomics & Outcomes Research

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A new informant‐based questionnaire for instrumental activities of daily living in dementia

Cited by 100 publications

References 40 publications

Validation of the Amsterdam IADL Questionnaire©, a New Tool to Measure Instrumental Activities of Daily Living in Dementia

Validation of the Amsterdam IADL Questionnaire©, a New Tool to Measure Instrumental Activities of Daily Living in Dementia

Delays in Manual Reaching Are Associated with Impaired Functional Abilities in Early Dementia Patients

Patient-oriented outcome measures in brain tumor patients: catching up after a slow start

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