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The Lawton Instrumental Activities Daily Living/Activities Daily Living Scales: A Sensitive Test to Alzheimer Disease in Community-Dwelling Elderly People?



The Lawton Instrumental Activities Daily Living/Activities Daily Living Scales: A Sensitive Test to Alzheimer Disease in Community-Dwelling Elderly People?



Journal of Geriatric Psychiatry and Neurology 27(2): 85-93



To examine the diagnostic ability of the Lawton Instrumental Activities Daily Living (IADLs) scale and the Activities Daily Living (ADLs) scale as a sensitive tool to Alzheimer's disease (AD) in community-dwelling elderly people. In an old age memory outpatient center, among patients with a clinical diagnosis of AD dementia or no dementia supported by at least 6 months of follow-up, we looked back at the baseline Lawton IADL scale (short version IADL-4 item), ADL scale, Mini-Mental State Examination (MMSE), and Montreal Cognitive Assessment (MOCA) values. There were 109 patients with AD and 53 nondemented individuals (81.4 ± 4.6 years). The sensitivity of ADL scale or IADL-4 item or the MMSE was low (52%-57%). The most efficient AD classification used both the IADLs-4 item and the MOCA with a threshold score of 20. Besides age and memory scores, the main correlates of IADLs scale or ADLs scale were executive, neuropsychiatric, vascular, and extrapyramidal scores. Our results suggest that the Lawton IADLs-4 item scale and ADLs scale lack sensitivity to AD dementia in elderly people and support a better sensitivity of MOCA rather than MMSE and IADLs-4 item/ADLs at the expense of specificity.

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Accession: 056196163

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PMID: 24578460

DOI: 10.1177/0891988714522694


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