Psychometric properties of instruments assessing intrinsic capacity: a systematic review

Chen, Y., Kukreti, S., Yang, H., Liu, C., Yeh, Y., Fung, X.C.C., Liu, C., Liu, L., Griffiths, M.D. ORCID: 0000-0001-8880-6524, Yang, Y. and Lin, C., 2023. Psychometric properties of instruments assessing intrinsic capacity: a systematic review. Asian Journal of Social Health and Behavior, 6 (4), pp. 141-155. ISSN 2772-4204

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Introduction: Intrinsic capacity (IC) is a multidimensional indicator proposed by the World Health Organization that encompasses mental and physical capacities associated with functional ability. With the help of IC, different pathways of aging can be better understood, and heterogeneity can be captured more effectively. Before IC can be clinically incorporated, it requires valid and usable instruments alongside a comprehensive evaluation of psychometric evidence. Therefore, the present systematic review critically appraised, compared, and summarized the measurement properties of existing IC instruments used by older people.

Methods: Published studies were searched in seven databases: EMBASE, MEDLINE, PsycINFO, PubMed, ScienceDirect, Scopus, and Web of Science, until August 2022. The measurement properties of the IC measures were evaluated using the COnsensus-based Standards for the selection of health Measurement INstruments (COSMIN).

Results: Of the 582 papers initially identified, 10 studies were eligible for inclusion. Seven instruments were classified as five-domain measures, and three as more than five-domain measures. No instrument assessed all nine criteria in the psychometric properties evaluation outlined by COSMIN. The most reported psychometric properties were construct validity (n = 8), measurement invariance (n = 8), and structural validity (n = 7). There was underreporting of content validity, reliability, and measurement error.

Conclusion: The present review indicated a general lack of psychometric assessments of existing IC instruments with independent studies as their evidence base. There is a need to explore further the associations of IC and its five domains of interaction, which express the ability of individuals to interact with the environment and affect their functional ability.

Item Type: Journal article
Publication Title: Asian Journal of Social Health and Behavior
Creators: Chen, Y., Kukreti, S., Yang, H., Liu, C., Yeh, Y., Fung, X.C.C., Liu, C., Liu, L., Griffiths, M.D., Yang, Y. and Lin, C.
Publisher: Medknow Publications
Date: 2023
Volume: 6
Number: 4
ISSN: 2772-4204
Rights: © 2024 Asian Journal of Social Health and Behavior. Published by Wolters Kluwer - Medknow. This is an open access journal, and articles are distributed under the terms of the Creative Commons Attribution‑NonCommercial‑ShareAlike 4.0 License, which allows others to remix, tweak, and build upon the work non‑commercially, as long as appropriate credit is given and the new creations are licensed under the identical terms.
Divisions: Schools > School of Social Sciences
Record created by: Laura Ward
Date Added: 06 Feb 2024 15:30
Last Modified: 06 Feb 2024 15:30

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