Health related quality of life and symptom classification in patients with irritable bowel syndrome

Previous research has established that health-related quality of life can be adversely affected by irritable bowel syndrome IBS. Irritable bowel syndrome has been classified to subgroups by predominant bowel symptom: constipation, diarrhoea or alternating between the two. Little is presently known about the specific impact of irritable bowel syndrome on health-related quality of life within disease sub-groups across time