Table 1.

Age and gender distribution of the entire sample

subsample	n	age (years)		women (percent)
		M	SD
IBS patients	65	49	12	58.5
Chronic IBD patients	74	45	15	58.1
Psychosomatic patients	45	54	8	68.9
Orthopaedic patients and students	188	33	16	64.4
Total	372	41	17	62.6

IBD inflammatory bowel disease, IBS irritable bowel syndrome