Psychological self-efficacy and coping styles as mediators between perceived stress and IBS symptom severity: a cross-sectional study
Abstract
Background: Irritable bowel syndrome (IBS) is a prevalent functional gastrointestinal disorder, often exacerbated by psychological stress. Psychological self-efficacy and coping styles may influence the relationship between stress and symptom severity. Objective: This study aimed to examine the mediating roles of psychological self-efficacy and coping styles in the association between perceived stress and IBS symptom severity. Methods: In a cross-sectional design, 300 IBS patients from Tehran (2025) were recruited via convenience sampling. Participants completed validated Persian questionnaires assessing perceived stress, psychological self-efficacy, coping styles, and IBS symptom severity. Data were analyzed using multiple regression and mediation analysis following Baron and Kenny’s approach. Results: Perceived stress showed a significant direct positive association with IBS symptom severity (P < 0.001). Additionally, psychological self-efficacy and coping styles partially mediated this relationship, accounting for a significant indirect effect (P < 0.01). Decreased self-efficacy and maladaptive coping were linked to greater symptom severity. Conclusion: Enhancing psychological self-efficacy and promoting adaptive coping strategies could be effective targets for psychological interventions aiming to reduce IBS symptom severity.
How strong is the evidence?
Evidence Hub reads this as a cross-sectional, done in people. Its evidence level is 4 of 5 (Low · observational). Observational designs can show an association but not prove cause. Reported size: 300 participants or records.
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