The measurement of irritable bowel syndrome (IBS)-related misconceptions in people with IBS.

Irritable bowel syndrome (IBS) is a common chronic disorder affecting between 15% and 22% of Western populations; core symptoms include abdominal pain and disturbed bowel function. Adjusting to living with IBS may entail considerable coping effort and, because medical treatments are largely ineffective, people with IBS must learn to manage the condition themselves. Self-management programs that include an increased awareness of and information relating to chronic illness have been shown to lead to positive benefits. The present article describes the development of the IBS misconceptions scale, an instrument designed to measure the misconceptions held by people with IBS. The final 17-item questionnaire was able to differentiate between three groups expected to differ in terms of IBS-related misconceptions, and showed good validity and reliability. The IBS-MS may be a useful tool in patient education programs, because it should be sensitive to changes in illness-related knowledge gained during intervention programs, and it is hoped that further research will lend further support to its reliability, validity, and usefulness.