Lawton IADL scale in dementia: can item response theory make it more informative? | Zendy

Sarah McGrory | Zendy; Susan D. Shenkin | Zendy; Elizabeth Austin | Zendy; John M. Starr | Zendy

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Lawton IADL scale in dementia: can item response theory make it more informative?

Author(s) -

Sarah McGrory,

Susan D. Shenkin,

Elizabeth Austin,

John M. Starr

Publication year - 2013

Publication title -

age and ageing

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.014

H-Index - 143

eISSN - 1468-2834

pISSN - 0002-0729

DOI - 10.1093/ageing/aft173

Subject(s) - item response theory , activities of daily living , statistic , dementia , scale (ratio) , raw score , reliability (semiconductor) , classical test theory , psychology , psychometrics , medicine , gerontology , clinical psychology , raw data , statistics , physical therapy , power (physics) , mathematics , physics , disease , pathology , quantum mechanics

impairment of functional abilities represents a crucial component of dementia diagnosis. Current functional measures rely on the traditional aggregate method of summing raw scores. While this summary score provides a quick representation of a person's ability, it disregards useful information on the item level.

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