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 17 June 2018

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News

Brief self-report measure for IBS cognitive function

The most recent issue of the European Journal of Gastroenterology & Hepatology developed the IBS Cognitive Affective Scale, a brief self-report measure for clinical and research settings.

News image

Measures of cognitive-affective processes believed to underlie Irritable Bowel Syndrome (IBS) symptom expression are used widely in both clinical and research settings.

When combined, these measures can be time-consuming and it is not clear whether they evaluate distinct or overlapping constructs.

With this study, Drs Saraha Ballou and Laurieb Keefer identified the most critical cognitive-affective components contributing toward the expression of IBS, and identified which items in these constructs might be streamlined into a single, brief self-report measure.

This measure was developed according to Food and Drug Administration guidelines for patient-reported outcome development.

44-item measure was created
European Journal of Gastroenterology & Hepatology

The authors consolidated existing cognitive-affective measures into a single questionnaire.

A principal components factor analysis was carried out on the basis of responses from a sample of participants with IBS.

An initial, 44-item measure was created.

In all, the team reported that 179 patients with ROME-III IBS completed an online survey.

Principal component analysis and item reduction yielded a 15-item scale with 3 factors: pain catastrophization, visceral hypervigilance, and extraintestinal hypervigilance.

The researchers found that the final 3 factors showed comparable internal consistencies, concurrent validity, and predictive validity compared with the original 44 items.

Dr Ballou's team concludes, "Although more research is warranted, the 15 items identified appear to provide an accurate measure of two important cognitive-affective constructs in the IBS population."

Eur J Gastroenterol Hepatol 2017: 29(7): 849–854
30 June 2017

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