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Title: Relations between symptom severity, illness perceptions, visceral sensitivity, coping strategies and well-being in irritable bowel syndrome guided by the common sense model of illness.
Austin Authors: Knowles, Simon R;Austin, David W;Sivanesan, Suresh;Tye-Din, Jason;Leung, Christopher ;Wilson, Jarrad;Castle, David J;Kamm, Michael A;Macrae, Finlay;Hebbard, Geoff
Affiliation: Faculty Health, Arts, and Design, Department of Psychology, Swinburne University of Technology, Melbourne, Australia
Department of Medicine, The University of Melbourne, Melbourne, Australia
Department of Psychiatry, St Vincent's Hospital, Melbourne, Australia
Department of Gastroenterology and Hepatology, Royal Melbourne Hospital, Melbourne, Australia
Department of Psychology, Deakin University, Melbourne, Australia
Walter and Eliza Hall Institute, Melbourne, Australia
Austin Health
Royal Hobart Hospital, Tasmania, Australia
Department of Gastroenterology and Medicine, St Vincent's Hospital, Melbourne, Australia
Division of Immunology, Imperial College, London, UK
Issue Date: Jun-2017
Date: 2016-04-04
Publication information: Psychology, Health & Medicine 2017; 22(5): 524-534
Abstract: Irritable Bowel Syndrome (IBS) is a common condition affecting around 10-20% of the population and associated with poorer psychological well-being and quality of life. The aim of the current study was to explore the efficacy of the Common Sense Model (CSM) using Structural Equation Modelling (SEM) in an IBS cohort. One hundred and thirty-one IBS patients (29 males, 102 females, mean age 38 years) participating in the pre-intervention assessment were included. Measures included IBS severity (Irritable Bowel Syndrome Severity Scoring System), coping patterns (Carver Brief COPE), visceral sensitivity (Visceral Sensitivity Index), illness perceptions (Brief Illness Perceptions Questionnaire), psychological distress (Depression, Anxiety and Stress Scale), and quality of life (IBS Quality of Life scale; IBS-QoL). Using SEM, a final model with an excellent fit was identified (χ2(8) = 11.91, p = .16, χ2/N = 1.49, CFI > .98, TLI > .96, SRMR < .05). Consistent with the CSM, Illness perceptions were significantly and directly influenced by IBS severity (β = .90, p < .001). Illness perceptions in turn directly influenced maladaptive coping (β = .40, p < .001) and visceral sensitivity (β = .70, p < .001). Maladaptive coping and visceral sensitivity were significantly associated with psychological distress (β = .55, p < .001; β = .22, p < .01) and IBS-QoL (β = -.28, p < .001; β = -.62, p < .001). Based on these findings, we argue that to augment the adverse impact of IBS severity on IBS-QoL and psychological distress, psychological interventions will be best to target the mediating psychological processes including illness beliefs, visceral sensitivity and maladaptive coping.
DOI: 10.1080/13548506.2016.1168932
Journal: Psychology, Health & Medicine
PubMed URL: 27045996
Type: Journal Article
Subjects: Irritable Bowel Syndrome
psychological distress
quality of life
Appears in Collections:Journal articles

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