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Testing an integrated behavioural and biomedical model of disability in N-of-1 studies with chronic pain.

Quinn, Francis; Johnston, Marie; Johnston, Derek W.

Authors

Francis Quinn

Marie Johnston

Derek W. Johnston



Abstract

Background. Previous research has supported an integrated biomedical and behavioural model explaining activity limitations. However, further tests of this model are required at the within-person level, because while it proposes that the constructs are related within individuals, it has primarily been tested between individuals in large group studies. We aimed to test the integrated model at the within-person level. Method. Six correlational N-of-1 studies in participants with arthritis, chronic pain and walking limitations. Daily measures of theoretical constructs were collected using a handheld computer (PDA), activity was assessed by self-report and accelerometer, and data analysed using time-series analysis. Results. The biomedical model was not supported as pain-impairment did not predict activity, so the integrated model was supported partially. Impairment predicted intention to move around while perceived behavioural control (PBC) and intention predicted activity. PBC did not predict activity limitation in the expected direction. Conclusions. The integrated model of disability was partially supported within individuals, especially the behavioural elements. However, results suggest that different elements of the model may drive activity (limitations) for different individuals. The integrated model provides a useful framework for understanding disability and suggests interventions, and the utility of N-of-1 methodology for testing theory is illustrated.

Journal Article Type Article
Publication Date Dec 31, 2013
Journal Psychology and health
Print ISSN 0887-0446
Electronic ISSN 1476-8321
Publisher Taylor & Francis
Peer Reviewed Peer Reviewed
Volume 28
Issue 12
Pages 1391-1406
Institution Citation QUINN, F., JOHNSTON, M. and JOHNSTON, D. W., 2013. Testing an integrated behavioural and biomedical model of disability in N-of-1 studies with chronic pain. Psychology and health [online], 28(12), pages 1391-1406. Available from: https://doi.org/10.1080/08870446.2013.814773
DOI https://doi.org/10.1080/08870446.2013.814773
Keywords Disability; ICF Theory of planned behaviour; Chronic pain; N of 1; Single case

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