ArticleWorld journal of gastroenterology2015
Latent structure of irritable bowel syndrome symptom severity.
Article in World journal of gastroenterology, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.
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Who cites it
2 citing papers in PubMed.
- Effectiveness of Group Emotional Schema Therapy on Psychological Distress, Severity and Frequency of Symptoms in Women with Irritable Bowel Syndrome.Advanced biomedical research · 2024Article
- Impact of symptom severity in patients with diarrhoea-predominant irritable bowel syndrome (IBS-D): results from two separate surveys of HCPs and patients with IBS-D.BMC gastroenterology · 2020Article
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Authors and funding
4 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
aimTo investigate the latent structure of an irritable bowel syndrome (IBS) symptom severity scale in a population of healthy adults.
methodsThe Birmingham IBS symptom questionnaire which consists of three symptom specific scales (diarrhea, constipation, pain) was evaluated by means of structural equation modeling. We compared the original 3-factor solution to a general factor model and a bifactor solution in a large internet sample of college students (n = 875). Statistical comparisons of competing models were conducted by means of χ (2) difference tests. Regarding the evaluation of model fit, we examined the comparative fit index (CFI) and the Root Mean Square Error of Approximation (RMSEA).
resultsResults clearly favored a bifactor model of IBS symptom severity (CFI = 0.99, RMSEA = 0.05) which consisted of a strong general IBS somatization factor and three symptom specific factors (diarrhea, constipation, pain) based on the subscales of the Birmingham IBS symptom questionnaire. The fit indices of the competing one factor model (CFI = 0.85, RMSEA = 0.17) and three factor model (CFI = 0.97, RMSEA = 0.08) were clearly inferior. χ (2) difference tests showed that the differences between the models were indeed significant in favor of the bifactor model (P < 0.001). Correlations of the four latent factors with measures of pain sensitivity, somatoform dissociation, fatigue severity, and demographic variables support the validity of our bifactor model of IBS specific symptom severity.
conclusionThe findings suggest that IBS symptom severity might best be understood as a continuous and multidimensional construct which can be reliably and validly assessed with the B-IBS.
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