Table 1. Clinical variables for IBS patients.

	Type	Description
		Female	Male
Bowel Habit	Constipation	26	3
	Diarrhea	19	5
	Mixed	20	4
	Unspecified	5	8
	Total	70	20
Patient Variable	Two Sample T-Test	Mean(SD)	Mean(SD)
IBS Symptom Duration (year)	p = 0.396	11.51(8.08)	11.12(7.42)
Usual symptom severity (past week)	p = 0.892	3.14(0.60)	3.17(0.62)
Overall symptom severity (past week)	p = 0.628	10.78(4.42)	11.40(4.58)
Abdominal Pain (past week)	p = 0.970	9.32(4.95)	9.375(5.19)

Groups: Healthy Control (HC), Irritable bowel syndrome (IBS).