Measurement of Pain and Related Symptoms in Irritable Bowel Syndrome: The Use of Validated Pain Measurement Tools

This paper reviews the tools available to assess outcomes of treatment in irritable bowel syndrome, especially the effect on abdominal pain. Tools were identified through a wide-ranging scrutiny of PubMed and Google Scholar, together with a review of further references quoted in those publications. It critically considers their development, relevance and reliability. The Irritable Bowel Severity Scoring System (IBS-SSS) was the first simple method of monitoring the progress of the disease and its treatment. It led on to other instruments, such as The Irritable Bowel Syndrome Quality of Life (IBS-QOL). It is easier to read and faster to complete than the IBS-SSS., However, these and other tools were developed for English speaking populations. This review considers the impact of ethnicity and gender, together with the lack of information on the effect of age on the potential validity of these tools in other populations. Issues with the adequacy and appropriateness of translations of such tools are discussed. The overall conclusion is that there are few tools which meet the criteria necessary to place confidence in their validity as appropriate measures of patient outcomes.