Background: To compare psychological and QOL differences between women with IBS and IBD in a large online sample and to validate the short-form of the IBDQ for use across clinical and research samples
Methods: Following a National Press release in Ireland, a large online sample of female participants (N= 995) with a diagnosis of either IBD (249) or IBS (746) were compared across the IBDQ and several measures of psychological well-being.
Findings: Participants with IBS had higher scores on measures of absorption, an aspect of dissociation. They also had more difficulty in regulating their emotions. Both groups were similar across three of the IBDQ scales. As expected, participants diagnosed with IBD had higher scores on the 'Bowel' sub-scale of the IBDQ. A multiple regression found that a model including age, depression, anxiety and stress accounted for 31% of the variance for the SIBDQ, with depression accounting for 24% of the variance and anxiety accounting for a further 5%. The SIBDQ correlated moderately with all 3 scales of the DASS. A factor analysis suggested that a single factor was being measured in the SIBDQ across both the IBD and IBS samples.
Discussion: Clinicians need to be informed of the significant clinical and psychological burden which women with IBS present and that their well-being is as affected as much, if not more, than those with an 'organic' IBD diagnosis. The SIBDQ appears to be a valid and reliable measure for both clinical populations. These findings need to be replicated in future studies.