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Translation, validation, and first application of the Greek version of an irritable bowel syndrome severity scoring
Nikolaos Dimzas1, Konstantinos Argyriou1, Maria Zachou2
1Department of Gastroenterology, University Hospital of Larissa (Nikolaos Dimzas, Konstantinos Argyriou, Petros S. Potamianos, Andreas Kapsoritakis).
Background:
The Irritable Bowel Syndrome Severity Scoring System (IBS-SSS) is a self-administered questionnaire that categorizes patients according to symptom severity. We aimed to translate and adapt the English IBS-SSS, validate the Greek version, and detect factors predictive of IBS severity.
Methods:
The original English version was obtained from the Rome Foundation, and the final Greek version arose through a process of translation, comprehensibility evaluation and back-translation. The 141 participants enlisted in the study were enrolled from 2 tertiary hospitals and were divided into 2 groups (98 patients and 43 healthy volunteers). We evaluated the questionnaire properties based on COSMIN criteria.
Results:
The recruited patients reported either diarrhea-predominant (34.7%), constipation-predominant (28.6%), or mixed subtype (36.7%) IBS. No significant variations were found regarding the frequency and intensity of abdominal pain and flatulence among the 3 IBS subtypes. Severity scores among healthy volunteers were significantly lower compared to IBS patients, irrespective of their disease subtype (P<0.001). The Cronbach coefficient (α) was calculated at 0.953, suggesting high inter-item internal consistency. The intraclass correlation coefficient was calculated and found to be high, suggesting good responsiveness of the questionnaire. Two-way MANOVA evaluation showed that demographic variables (age, family status, body mass index [BMI], smoking, and alcohol consumption) in the Greek population affect the IBS-SSS score and syndrome severity.
Conclusions:
The Greek version of IBS-SSS is a reliable, valid and responsive tool for assessing Greek IBS patients' symptom severity. Older age, smoking, alcohol use and higher BMI are indicative of greater symptom severity.
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