Detecting longitudinal changes in activities of daily living (ADL) dependence : Optimizing ADL staircase response choices
(2019) In British Journal of Occupational Therapy 82(10). p.646-652- Abstract
Introduction: Using a sum score based on a three-graded response scale for the activities of daily living staircase has previously been found to increase the statistical power compared to dichotomized responses when assessing longitudinal changes in activities of daily living. We aimed to investigate if the statistical power could be further increased by using a four-graded scale. Methods: We used data from two previous studies on community-living people to calculate sum scores based on a dichotomized (independent/dependent), a three-graded (independent/partly dependent/dependent), and a four-graded (independent without difficulty/independent with difficulty/partly dependent/dependent) response scale for the activities of daily living... (More)
Introduction: Using a sum score based on a three-graded response scale for the activities of daily living staircase has previously been found to increase the statistical power compared to dichotomized responses when assessing longitudinal changes in activities of daily living. We aimed to investigate if the statistical power could be further increased by using a four-graded scale. Methods: We used data from two previous studies on community-living people to calculate sum scores based on a dichotomized (independent/dependent), a three-graded (independent/partly dependent/dependent), and a four-graded (independent without difficulty/independent with difficulty/partly dependent/dependent) response scale for the activities of daily living staircase. In total, 1818 paired observations (baseline to follow-up) from 482 people were included. Statistical power was estimated for the entire material as well as stratified by follow-up time and baseline activities of daily living using simulations. Results: The four-graded scale provided the highest statistical power, particularly for shorter follow-up times and low and high baseline activities of daily living, but had similar statistical power to the three-graded scale for longer follow-up times and medium baseline activities of daily living. Conclusion: Adding a second level to “independent” in the activities of daily living staircase improved the detection of changes over time.
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- author
- Axmon, Anna LU ; Ekstam, Lisa LU ; Slaug, Björn LU ; Schmidt, Steven M. LU and Fänge, Agneta Malmgren LU
- organization
-
- EPI@LUND (research group)
- eSSENCE: The e-Science Collaboration
- Participation, ageing and everyday life (research group)
- Lund OsteoArthritis Division - Joint injury research group (research group)
- MultiPark: Multidisciplinary research focused on Parkinson´s disease
- Active and Healthy Ageing Research Group (research group)
- publishing date
- 2019-10-01
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- Activities of daily living, data interpretation, occupational therapy, statistical longitudinal studies, CASE - Centre for Ageing and Supportive Environments
- in
- British Journal of Occupational Therapy
- volume
- 82
- issue
- 10
- pages
- 7 pages
- publisher
- SAGE Publications
- external identifiers
-
- scopus:85067842342
- ISSN
- 0308-0226
- DOI
- 10.1177/0308022619853513
- project
- FORMAS EVIDENCE – Longterm effects of housing adaptations for client and society
- language
- English
- LU publication?
- yes
- id
- 1bf2ea59-b1ba-4c9c-86e7-00ec665cb11f
- date added to LUP
- 2019-07-08 13:30:00
- date last changed
- 2022-09-07 10:32:23
@article{1bf2ea59-b1ba-4c9c-86e7-00ec665cb11f, abstract = {{<p>Introduction: Using a sum score based on a three-graded response scale for the activities of daily living staircase has previously been found to increase the statistical power compared to dichotomized responses when assessing longitudinal changes in activities of daily living. We aimed to investigate if the statistical power could be further increased by using a four-graded scale. Methods: We used data from two previous studies on community-living people to calculate sum scores based on a dichotomized (independent/dependent), a three-graded (independent/partly dependent/dependent), and a four-graded (independent without difficulty/independent with difficulty/partly dependent/dependent) response scale for the activities of daily living staircase. In total, 1818 paired observations (baseline to follow-up) from 482 people were included. Statistical power was estimated for the entire material as well as stratified by follow-up time and baseline activities of daily living using simulations. Results: The four-graded scale provided the highest statistical power, particularly for shorter follow-up times and low and high baseline activities of daily living, but had similar statistical power to the three-graded scale for longer follow-up times and medium baseline activities of daily living. Conclusion: Adding a second level to “independent” in the activities of daily living staircase improved the detection of changes over time.</p>}}, author = {{Axmon, Anna and Ekstam, Lisa and Slaug, Björn and Schmidt, Steven M. and Fänge, Agneta Malmgren}}, issn = {{0308-0226}}, keywords = {{Activities of daily living; data interpretation; occupational therapy; statistical longitudinal studies; CASE - Centre for Ageing and Supportive Environments}}, language = {{eng}}, month = {{10}}, number = {{10}}, pages = {{646--652}}, publisher = {{SAGE Publications}}, series = {{British Journal of Occupational Therapy}}, title = {{Detecting longitudinal changes in activities of daily living (ADL) dependence : Optimizing ADL staircase response choices}}, url = {{http://dx.doi.org/10.1177/0308022619853513}}, doi = {{10.1177/0308022619853513}}, volume = {{82}}, year = {{2019}}, }