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Factor structure and construct validity of the Adult Social Care Outcomes Toolkit for Carers (ASCOT-Carer).

Rand SE, Malley JN, Netten AP, Forder JE - Qual Life Res (2015)

Bottom Line: 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 (seven 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.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.

View Article: PubMed Central - PubMed

Affiliation: Quality and Outcomes of Person-Centred Care Policy Research Unit (QORU), PSSRU Kent, Cornwallis Building, University of Kent, Canterbury, CT2 7NF, UK. S.E.Rand@kent.ac.uk.

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. Three hundred and eighty-seven carers completed a face-to-face or telephone interview. Data on variables hypothesised to be related to SCRQoL (e.g. 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 (seven 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.

Conclusion: 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.

No MeSH data available.


Related in: MedlinePlus

Distribution of the ASCOT-Carer social care-related quality of life scores (n = 384)
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Related In: Results  -  Collection


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Fig1: Distribution of the ASCOT-Carer social care-related quality of life scores (n = 384)

Mentions: The overall ASCOT-Carer SCRQoL score has a negatively skewed and possibly bi-modal distribution (Fig. 1). The distribution indicates that there may be a ceiling effect at the upper end of the scale. The rate of missing values was low with less than 1 % (3) of respondents who had one or more missing values. This indicates that the questions are acceptable and feasible. Cronbach’s alpha for the ASCOT-Carer SCRQoL score was 0.87 (seven items). An alpha of 0.8–0.9 considered to be good [46], which indicates that the instrument has good internal consistency.Fig. 1


Factor structure and construct validity of the Adult Social Care Outcomes Toolkit for Carers (ASCOT-Carer).

Rand SE, Malley JN, Netten AP, Forder JE - Qual Life Res (2015)

Distribution of the ASCOT-Carer social care-related quality of life scores (n = 384)
© Copyright Policy - OpenAccess
Related In: Results  -  Collection

Show All Figures
getmorefigures.php?uid=PMC4592701&req=5

Fig1: Distribution of the ASCOT-Carer social care-related quality of life scores (n = 384)
Mentions: The overall ASCOT-Carer SCRQoL score has a negatively skewed and possibly bi-modal distribution (Fig. 1). The distribution indicates that there may be a ceiling effect at the upper end of the scale. The rate of missing values was low with less than 1 % (3) of respondents who had one or more missing values. This indicates that the questions are acceptable and feasible. Cronbach’s alpha for the ASCOT-Carer SCRQoL score was 0.87 (seven items). An alpha of 0.8–0.9 considered to be good [46], which indicates that the instrument has good internal consistency.Fig. 1

Bottom Line: 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 (seven 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.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.

View Article: PubMed Central - PubMed

Affiliation: Quality and Outcomes of Person-Centred Care Policy Research Unit (QORU), PSSRU Kent, Cornwallis Building, University of Kent, Canterbury, CT2 7NF, UK. S.E.Rand@kent.ac.uk.

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. Three hundred and eighty-seven carers completed a face-to-face or telephone interview. Data on variables hypothesised to be related to SCRQoL (e.g. 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 (seven 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.

Conclusion: 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.

No MeSH data available.


Related in: MedlinePlus