Brundle, C, Heaven, A, Brown, L et al. (4 more authors) (2019) Convergent validity of the electronic frailty index. Age and Ageing, 48 (1). pp. 152-156. ISSN 0002-0729
Abstract
Background: the electronic frailty index (eFI) has been developed and validated using routine primary care electronic health record data. The focus of the original big data study was on predictive validity as a form of criterion validation. Convergent validity is a subtype of construct validity and considered a core component of the validity of a test.
Objective: to investigate convergent validity between the eFI and research standard frailty measures.
Design: cross-sectional validation study using data from the Community Ageing Research 75+ (CARE 75+) cohort.
Setting: multi-site UK community-based cohort study.
Subjects: three hundred fifty-three community-dwelling older people (median age 80 years, IQR 77–84), excluding care home residents and people in the terminal stage of life. Median eFI score of participants was 0.22 (IQR 0.14–0.31).
Methods: convergent validities between the eFI and: a research standard frailty index (FI); the phenotype model of frailty; Clinical Frailty Scale (CFS) and Edmonton Frail Scale were assessed using scatter plots and Spearman’s rank tests to estimate correlation coefficients (Spearman’s rho, ρ) and 95% confidence intervals.
Results: results indicate strong correlation between the eFI and both the research standard FI (ρ = 0.68, 95% CI 0.62–0.74) and Edmonton Frail Scale (ρ = 0.63, 95% CI 0.57–0.69). There was evidence for moderate correlation between the eFI and both the CFS (ρ = 0.59, 95% CI 0.49–0.65) and phenotype model (ρ = 0.51, 95% CI 0.42–0.59).
Conclusions: This study provides evidence for convergent validity of the eFI, a core component of test validity.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © The Author(s) 2018. Published by Oxford University Press on behalf of the British Geriatrics Society. All rights reserved. This is an author produced version of a paper published in Age and Ageing. Uploaded in accordance with the publisher's self-archiving policy. |
Keywords: | frailty; electronic frailty index; electronic frailty index (eFI); correlation; validity; older people |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Medicine and Health (Leeds) > School of Medicine (Leeds) > Leeds Institute of Health Sciences (Leeds) > Academic Unit of Elderly Care and Rehabilitation (Leeds) The University of Leeds > Faculty of Medicine and Health (Leeds) > School of Medicine (Leeds) > Leeds Institute of Health Sciences (Leeds) > Centre for Health Services Research (Leeds) |
Depositing User: | Symplectic Publications |
Date Deposited: | 31 Jul 2018 09:38 |
Last Modified: | 15 Oct 2019 00:38 |
Status: | Published |
Publisher: | Oxford University Press |
Identification Number: | 10.1093/ageing/afy162 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:133963 |