Assessing Functioning in adolescents with Chronic Fatigue Syndrome:: Psychometric properties and Factor Structure of the School and Social Adjustment Scale and the Physical Functioning Subscale of the SF36

Maria Loades; Silia Vitoratou; Katharine E. Rimes; Trudie Chalder

doi:10.1017/S1352465820000193

Assessing Functioning in adolescents with Chronic Fatigue Syndrome: Psychometric properties and Factor Structure of the School and Social Adjustment Scale and the Physical Functioning Subscale of the SF36

Maria Loades, Silia Vitoratou, Katharine E. Rimes, Trudie Chalder

Department of Psychology

King's College London

Research output: Contribution to journal › Article › peer-review

8 Citations (SciVal)

228 Downloads (Pure)

Abstract

Chronic fatigue syndrome (CFS) has a major impact on functioning. However, no validated measures of functioning for this population exist.Aims: We aimed to establish the psychometric properties of the 5-item School and Social Adjustment Scale (SSAS) and the 10-item Physical Functioning Subscale of the SF-36 in adolescents with CFS.Method: Measures were completed by adolescents with CFS (n = 121).Results: For the Physical Functioning Subscale, a 2-factor solution provided a close fit to the data. Internal consistency was satisfactory. For the SSAS, a 1-factor solution provided an adequate fit to the data. The internal consistency was satisfactory. Inter-item and item-total correlations did not indicate any problematic items and functioning scores were moderately correlated with other measures of disability, providing evidence of construct validity.Conclusion: Both measures were found to be reliable and valid and provide brief measures for assessing these important outcomes. The Physical Functioning Subscale can be used as two subscales in adolescents with CFS.

Original language	English
Pages (from-to)	546-556
Number of pages	11
Journal	Behavioural and Cognitive Psychotherapy
Volume	48
Issue number	5
DOIs	https://doi.org/10.1017/S1352465820000193
Publication status	Published - 30 Sept 2020

Bibliographical note

Funding Information:
Financial support. M.L. receives salary support from the National Institute for Health Research (NIHR) Doctoral Research Fellowship Scheme. T.C. and S.V. acknowledge the financial support of the Department of Health via the National Institute for Health Research (NIHR) Specialist Biomedical Research Centre for Mental Health award to the South London and Maudsley NHS Foundation Trust (SLaM) and the Institute of Psychiatry at King's College London. This paper represents independent research funded by the National Institute for Health Research (NIHR) Biomedical Research Centre at South London and Maudsley NHS Foundation Trust and King's College London. The views expressed are those of the authors and not necessarily those of the NHS, the NIHR or the Department of Health and Social Care.

Publisher Copyright:
© British Association for Behavioural and Cognitive Psychotherapies 2020.

Keywords

CFS
academic
adolescents
functioning
physical
social

ASJC Scopus subject areas

Clinical Psychology

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Assessing Functioning in adolescents with Chronic Fatigue Syndrome: Psychometric properties and Factor Structure of the School and Social Adjustment Scale and the Physical Functioning Subscale of the SF36. / Loades, Maria; Vitoratou, Silia; Rimes, Katharine E. et al.
In: Behavioural and Cognitive Psychotherapy , Vol. 48, No. 5, 30.09.2020, p. 546-556.

Research output: Contribution to journal › Article › peer-review

Loades, M, Vitoratou, S, Rimes, KE & Chalder, T 2020, 'Assessing Functioning in adolescents with Chronic Fatigue Syndrome: Psychometric properties and Factor Structure of the School and Social Adjustment Scale and the Physical Functioning Subscale of the SF36', Behavioural and Cognitive Psychotherapy , vol. 48, no. 5, pp. 546-556. https://doi.org/10.1017/S1352465820000193

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abstract = "Chronic fatigue syndrome (CFS) has a major impact on functioning. However, no validated measures of functioning for this population exist.Aims: We aimed to establish the psychometric properties of the 5-item School and Social Adjustment Scale (SSAS) and the 10-item Physical Functioning Subscale of the SF-36 in adolescents with CFS.Method: Measures were completed by adolescents with CFS (n = 121).Results: For the Physical Functioning Subscale, a 2-factor solution provided a close fit to the data. Internal consistency was satisfactory. For the SSAS, a 1-factor solution provided an adequate fit to the data. The internal consistency was satisfactory. Inter-item and item-total correlations did not indicate any problematic items and functioning scores were moderately correlated with other measures of disability, providing evidence of construct validity.Conclusion: Both measures were found to be reliable and valid and provide brief measures for assessing these important outcomes. The Physical Functioning Subscale can be used as two subscales in adolescents with CFS.",

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