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Illness perceptions mediate the relationship between bowel symptom severity and health-related quality of life in IBS patients.

De Gucht V - Qual Life Res (2015)

Bottom Line: Mediation models were tested using the bootstrapping procedure developed by Hayes.In order to better understand this relationship, future research should not only include illness perceptions but also assess cognitive and behavioural coping responses.Clinicians wanting to improve patients' HRQOL should not only focus on the patients' symptoms, but also on their illness beliefs and coping responses.

View Article: PubMed Central - PubMed

Affiliation: Health Psychology Unit, Faculty of Social Sciences, Institute of Psychology, Leiden University, Wassenaarseweg 52, PO BOX 9555, 2300 RB, Leiden, The Netherlands, degucht@fsw.leidenuniv.nl.

ABSTRACT

Purpose: Irritable bowel syndrome (IBS) is a functional bowel disorder with a large negative impact on HRQOL. The present study examines whether severity of bowel symptoms is directly related to HRQOL, and/or indirectly, mediated by the patients' illness perceptions.

Methods: Patients were recruited from an IBS support group (N = 123), and data were collected online. HRQOL was measured with the Quality of Life Measure for Persons with IBS and illness perceptions with the brief Illness Perception Questionnaire. Mediation models were tested using the bootstrapping procedure developed by Hayes.

Results: Irritable bowel syndrome symptom severity is directly related to total HRQOL and its subscales; after entering the mediator variables (i.e. the patients' illness perceptions) into the model, this direct association remained only significant for total HRQOL. The relationship between bowel symptom severity and total HRQOL was partially mediated by illness perceptions, and its relationship with each of the HRQOL subscales was fully mediated by the patients' illness perceptions. Perceived consequences were a mediator of the relationship between bowel symptom severity, total HRQOL as well as its subscales, with the exception of Sexuality.

Conclusions: Bowel symptom severity not only has a direct relationship with HRQOL, but also an indirect relationship via the patients' cognitive and emotional representations of their illness. In order to better understand this relationship, future research should not only include illness perceptions but also assess cognitive and behavioural coping responses. Clinicians wanting to improve patients' HRQOL should not only focus on the patients' symptoms, but also on their illness beliefs and coping responses.

No MeSH data available.


Related in: MedlinePlus

Mediation models that were tested. Notea1–3 effect of independent variable on mediators, b1–3 effect of mediators on dependent variables, IBSS irritable bowel symptom severity, HRQol health-related quality of life
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Fig1: Mediation models that were tested. Notea1–3 effect of independent variable on mediators, b1–3 effect of mediators on dependent variables, IBSS irritable bowel symptom severity, HRQol health-related quality of life

Mentions: Based on the results of the univariate analyses, only the Brief IPQ dimensions measuring consequences, identity and emotional representation were entered as potential mediators in the mediation models with severity of bowel symptoms as the independent variable and HRQOL as the dependent variable (Fig. 1).Fig. 1


Illness perceptions mediate the relationship between bowel symptom severity and health-related quality of life in IBS patients.

De Gucht V - Qual Life Res (2015)

Mediation models that were tested. Notea1–3 effect of independent variable on mediators, b1–3 effect of mediators on dependent variables, IBSS irritable bowel symptom severity, HRQol health-related quality of life
© Copyright Policy - OpenAccess
Related In: Results  -  Collection

Show All Figures
getmorefigures.php?uid=PMC4493794&req=5

Fig1: Mediation models that were tested. Notea1–3 effect of independent variable on mediators, b1–3 effect of mediators on dependent variables, IBSS irritable bowel symptom severity, HRQol health-related quality of life
Mentions: Based on the results of the univariate analyses, only the Brief IPQ dimensions measuring consequences, identity and emotional representation were entered as potential mediators in the mediation models with severity of bowel symptoms as the independent variable and HRQOL as the dependent variable (Fig. 1).Fig. 1

Bottom Line: Mediation models were tested using the bootstrapping procedure developed by Hayes.In order to better understand this relationship, future research should not only include illness perceptions but also assess cognitive and behavioural coping responses.Clinicians wanting to improve patients' HRQOL should not only focus on the patients' symptoms, but also on their illness beliefs and coping responses.

View Article: PubMed Central - PubMed

Affiliation: Health Psychology Unit, Faculty of Social Sciences, Institute of Psychology, Leiden University, Wassenaarseweg 52, PO BOX 9555, 2300 RB, Leiden, The Netherlands, degucht@fsw.leidenuniv.nl.

ABSTRACT

Purpose: Irritable bowel syndrome (IBS) is a functional bowel disorder with a large negative impact on HRQOL. The present study examines whether severity of bowel symptoms is directly related to HRQOL, and/or indirectly, mediated by the patients' illness perceptions.

Methods: Patients were recruited from an IBS support group (N = 123), and data were collected online. HRQOL was measured with the Quality of Life Measure for Persons with IBS and illness perceptions with the brief Illness Perception Questionnaire. Mediation models were tested using the bootstrapping procedure developed by Hayes.

Results: Irritable bowel syndrome symptom severity is directly related to total HRQOL and its subscales; after entering the mediator variables (i.e. the patients' illness perceptions) into the model, this direct association remained only significant for total HRQOL. The relationship between bowel symptom severity and total HRQOL was partially mediated by illness perceptions, and its relationship with each of the HRQOL subscales was fully mediated by the patients' illness perceptions. Perceived consequences were a mediator of the relationship between bowel symptom severity, total HRQOL as well as its subscales, with the exception of Sexuality.

Conclusions: Bowel symptom severity not only has a direct relationship with HRQOL, but also an indirect relationship via the patients' cognitive and emotional representations of their illness. In order to better understand this relationship, future research should not only include illness perceptions but also assess cognitive and behavioural coping responses. Clinicians wanting to improve patients' HRQOL should not only focus on the patients' symptoms, but also on their illness beliefs and coping responses.

No MeSH data available.


Related in: MedlinePlus