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. Author manuscript; available in PMC: 2014 Feb 12.
Published in final edited form as: Gut. 2011 Jun 2;60(12):1671–1677. doi: 10.1136/gut.2011.241877

Table 1.

Demographic and clinical characteristics of IBS patients and controls

Sweden
 USA
 Total
Control IBS Control IBS Control IBS
N 900 427 231 434 1131 861
Mean age, years 45.6 42.2 36.7 44.5 43.8 43.4
Men/women 561/339 93/334 68/163 50/384 629/502 143/718
Alternating (IBS-A) 179 84 263
Constipation (IBS-C) 104 157 261
Diarrhoea (IBS-D) 144 174 318
Chronic abdominal pain 19 19

IBS, irritable bowel syndrome.