M E Loades1,2, S Vitoratou3, K A Rimes4, S Ali5, T Chalder4,5. 1. Department of Psychology, University of Bath, Bath, UK. 2. Bristol Medical School, University of Bristol, Bristol, UK. 3. Psychometrics & Measurement Lab, Department of Biostatistics and Health Informatics, King's College London, London, UK. 4. King's College London, London, UK. 5. South London and Maudsley NHS Trust, Beckenham, UK.
Abstract
BACKGROUND: To better understand the maintenance of chronic fatigue syndrome (CFS), a valid and reliable measure of cognitive and behavioural responses to symptoms is required. Such a measure could also assess beliefs and coping behaviours in the context of fatigue in other somatic conditions. AIMS: We aimed to establish the psychometric properties of both the Cognitive and Behavioural Responses Questionnaire (CBRQ) and its shortened version (CBRQ-S) in adolescents with CFS. METHOD: The full questionnaire was completed by a clinical cohort of adolescents (n = 121) presenting to specialist CFS units in the UK. RESULTS: Both the CBRQ and CBRQ-S had good internal consistency. The CBRQ scores were strongly associated with depression, anxiety, school and social functioning, but weakly associated with fatigue and physical functioning, providing evidence of validity. CONCLUSION: Both the 40-item and the 18-item versions of the CBRQ were found to be reliable and valid in adolescents with CFS. To minimize unnecessary burden, the 18-item version is favoured. Using this assessment tool in future studies, including intervention studies, may help to better target interventions during clinical practice and improve outcomes.
BACKGROUND: To better understand the maintenance of chronic fatigue syndrome (CFS), a valid and reliable measure of cognitive and behavioural responses to symptoms is required. Such a measure could also assess beliefs and coping behaviours in the context of fatigue in other somatic conditions. AIMS: We aimed to establish the psychometric properties of both the Cognitive and Behavioural Responses Questionnaire (CBRQ) and its shortened version (CBRQ-S) in adolescents with CFS. METHOD: The full questionnaire was completed by a clinical cohort of adolescents (n = 121) presenting to specialist CFS units in the UK. RESULTS: Both the CBRQ and CBRQ-S had good internal consistency. The CBRQ scores were strongly associated with depression, anxiety, school and social functioning, but weakly associated with fatigue and physical functioning, providing evidence of validity. CONCLUSION: Both the 40-item and the 18-item versions of the CBRQ were found to be reliable and valid in adolescents with CFS. To minimize unnecessary burden, the 18-item version is favoured. Using this assessment tool in future studies, including intervention studies, may help to better target interventions during clinical practice and improve outcomes.
Authors: Sanne L Nijhof; Gijs Bleijenberg; Cuno S P M Uiterwaal; Jan L L Kimpen; Elise M van de Putte Journal: Lancet Date: 2012-03-03 Impact factor: 79.321
Authors: Trudie Chalder; Kimberley A Goldsmith; Peter D White; Michael Sharpe; Andrew R Pickles Journal: Lancet Psychiatry Date: 2015-01-28 Impact factor: 27.083
Authors: Anna K Taylor; Maria Loades; Amberly Lc Brigden; Simon M Collin; Esther Crawley Journal: Clin Child Psychol Psychiatry Date: 2016-10-14 Impact factor: 2.544