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Application of a multidimensional computerized adaptive test for a Clinical Dementia Rating Scale through
Yi-Lien Lee1,2, Kao-Chang Lin3, Tsair-Wei Chien4,5
11Department of Medical Affairs, Chi-Mei Medical Center, No. 901, Chung Hwa Road, Yung Kung Dist., Tainan, 710 Taiwan.
Annals of General Psychiatry
|May 28, 2019
Summary
Multidimensional computer adaptive testing (MCAT) offers a more precise and efficient method for dementia screening. This online tool allows family members to easily assess dementia stages using the Clinical Dementia Rating (CDR) instrument.
Area of Science:
- Gerontology
- Medical Informatics
- Psychometrics
Background:
- Taiwan has a rapidly growing elderly population, with 14% aged 65 and above, classifying it as an aged society.
- Dementia is a significant health concern impacting the elderly population.
- Accurate and efficient dementia assessment tools are needed to determine disease stage.
Purpose of the Study:
- To develop an online multidimensional computer adaptive testing (MCAT) tool.
- To enable family members to independently screen and predict dementia stages.
- To utilize the Clinical Dementia Rating (CDR) instrument within the MCAT framework.
Main Methods:
- Applied the CDR to 366 hospital outpatients in Taiwan.
- Utilized MCAT with parameters across eight dimensions.
- Simulated responses to compare MCAT efficiency and precision against non-adaptive testing (NAT).
Main Results:
- MCAT demonstrated significantly higher precision and efficiency compared to NAT.
- MCAT achieved a 20.19% saving in item length with minimal loss in measurement precision.
- Fewer items were required with MCAT without compromising accuracy.
Conclusions:
- An online MCAT website is feasible for family use on various devices.
- This tool can aid in the online screening and prediction of dementia in older adults.
- The developed website is useful and manageable for caregivers.
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