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Factor structure and construct validity of the adult social care outcomes toolkit for carers (ASCOT-carer)

Rand, Stacey E., Malley, Juliette, Netten, Ann and Forder, Julien (2015) Factor structure and construct validity of the adult social care outcomes toolkit for carers (ASCOT-carer). Quality of Life Research, 24 (11). pp. 2601-2614. ISSN 0962-9343

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Identification Number: 10.1007/s11136-015-1011-x

Abstract

Background: The ASCOT-Carer is a self-report instrument designed to measure social care-related quality of life (SCRQoL). This article presents the psychometric testing and validation of the ASCOT-Carer four response-level interview (INT4) in a sample of unpaid carers of adults who receive publicly-funded social care services in England. Methods: Unpaid carers were identified through a survey of users of publicly-funded social care services in England. 387 carers completed a face-to-face or telephone interview. Data on variables hypothesised to be related to SCRQoL (for example, characteristics of the carer, cared-for person and care situation) and measures of carer experience, strain, health-related quality of life and overall QoL were collected. Relationships between these variables and overall SCRQoL score were evaluated through correlation, ANOVA and regression analysis to test the construct validity of the scale. Internal reliability was assessed using Cronbach’s alpha and feasibility by the number of missing responses. Results: The construct validity was supported by statistically significant relationships between SCRQoL and scores on instruments of related constructs, as well as with characteristics of the carer and care recipient in univariate and multivariate analyses. A Cronbach’s alpha of 0.87 (7 items) indicates that the internal reliability of the instrument is satisfactory and a low number of missing responses (<1%) indicates a high level of acceptance. Conclusions: The results provide evidence to support the construct validity, factor structure, internal reliability and feasibility of the ASCOT-Carer INT4 as an instrument for measuring social care-related quality of life of unpaid carers who care for adults with a variety of long-term conditions, disability or problems related to old age.

Item Type: Article
Official URL: http://link.springer.com/journal/11136
Additional Information: © 2015 The Authors
Divisions: Social Policy
Personal Social Services Research Unit
Subjects: H Social Sciences > H Social Sciences (General)
R Medicine > R Medicine (General)
Sets: Departments > Social Policy
Research centres and groups > LSE Health and Social Care
Research centres and groups > Personal Social Services Research Unit (PSSRU)
Date Deposited: 13 May 2015 15:44
Last Modified: 20 Mar 2019 02:40
URI: http://eprints.lse.ac.uk/id/eprint/61937

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