Key result
Type D personality was significantly associated with depression, a relationship that was mediated by cognitive distortions and family functioning in both irritable bowel syndrome patients and healthy individuals.
Why the study?
Although the cause of irritable bowel syndrome is unknown, psychological factors are reported among the most important causes, prompting evaluation of how type D personality and depression relate via cognitive distortions and family functioning.
Cross-Sectional (n=472)
p-value: p=<0.001
Cognitive distortions and family functioning significantly mediate the relationship between type D personality and depression in both IBS patients and healthy individuals.
Highlights potential intervention targets in type D personality; extends mediation findings but remains hypothesis-generating pending prospective data.
Irritable bowel syndrome (IBS) is one of the most common gastrointestinal disorders with symptoms of chronic abdominal pain and changes in bowel movements. Although the cause of this disorder is not known, psychological factors have been reported among the most important causes of IBS. This research was conducted to test and compare the structural relationship model of type D personality and depression with the mediating role of cognitive distortions and family functioning in patients with IBS and healthy people. Furthermore, we compared the mediational model across levels of grouping variable (IBS and healthy groups). The research method was descriptive correlational and the sample included 236 healthy citizens aged 20–60 years old (130 females and 100 males) whom selected by stratified random sampling method and 236 citizens with IBS aged 20–60 years old (177 females and 59 males), which selected by purposeful sampling method. The research participants answered the Beck Depression Inventory-short form (BDI-13), Type D Personality Scale (DS-14), Interpersonal Cognitive Distortion Scale (ICDS), Family Functioning Assessment Device (FAD), and IBS Symptom Index questionnaire based on ROME III criterion. The obtained data were analyzed using structural equation modeling (SEM). The results revealed that the model proposed in this research has an acceptable fit in both groups. Also, according to the results, cognitive distortion and family functioning play a mediating role in the relationship between type D personality and depression. In the case of comparing the mediational model across levels of grouping variable (IBS and healthy groups), we concluded that all paths are not different across the two models. In general, the results of this work can be specifically applied by counselors and psychotherapists.
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Gogheri et al. (2021) conducted a cross-sectional in Irritable Bowel Syndrome (n=472). Type D personality vs. Lower levels of Type D personality traits was evaluated on Depression severity mediated by cognitive distortions and family functioning (p=<0.001). Type D personality was significantly associated with depression, a relationship that was mediated by cognitive distortions and family functioning in both irritable bowel syndrome patients and healthy individuals.
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