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Items analysis of the Frailty Index (FI-35): Insight in the contribution of each item to the level of frailty

The FI-35 is a valid multidimensional Chinese frailty assessment instrument. Like other scales, functional measures rely on the information the total score provides. Our research aimed to analyze the contribution of each item. Descriptive statistics were used to summarize the sample characteristics....

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Published in:	PloS one 2021-11, Vol.16 (11), p.e0258588-e0258588
Main Authors:	Zhang, Xiaohong, Van Der Schans, C P, Liu, Yanhui, Krijnen, W, Hobbelen, J S M
Format:	Article
Language:	English
Subjects:	Aged Aged, 80 and over Aging - pathology Aging - physiology Biology and Life Sciences China - epidemiology Cognitive Dysfunction - epidemiology Cognitive Dysfunction - physiopathology Emotions - physiology Female Frail elderly Frail Elderly - psychology Geriatric Assessment Health aspects Humans Male Medicine and Health Sciences Middle Aged People and Places Physiological aspects Resistance Training Sleep - physiology Social Sciences Walking - physiology
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creator	Zhang, Xiaohong Van Der Schans, C P Liu, Yanhui Krijnen, W Hobbelen, J S M
description	The FI-35 is a valid multidimensional Chinese frailty assessment instrument. Like other scales, functional measures rely on the information the total score provides. Our research aimed to analyze the contribution of each item. Descriptive statistics were used to summarize the sample characteristics. The expected item score (EIS) was used to determine how the items contribute to the generic measure of frailty. This study showed that most of the EIS curves increased across the entire range of frailty levels, and most of the items discriminate relatively well over the entire frailty range. Items differentially contributed to the total frailty score and differentially discriminated between frailty levels. Although nearly all items monotonically increased with frailty levels, there were large differences between items in their ability to differentiate between persons being either weakly, moderately or highly frail.
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subjects	Aged Aged, 80 and over Aging - pathology Aging - physiology Biology and Life Sciences China - epidemiology Cognitive Dysfunction - epidemiology Cognitive Dysfunction - physiopathology Emotions - physiology Female Frail elderly Frail Elderly - psychology Geriatric Assessment Health aspects Humans Male Medicine and Health Sciences Middle Aged People and Places Physiological aspects Resistance Training Sleep - physiology Social Sciences Walking - physiology
title	Items analysis of the Frailty Index (FI-35): Insight in the contribution of each item to the level of frailty
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