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. Author manuscript; available in PMC: 2010 Aug 2.
Published in final edited form as: Pain. 2010 Jan 13;148(3):454–461. doi: 10.1016/j.pain.2009.12.005

Table 1.

Demographic variables for IBS patients and controls.

IBS patients (n = 78) Controls (n = 57)
Age (mean) ± SD 31.7 ± 7.1 29.5 ± 8.3
Sex (%) 55 Female (71%)
23 Male (29%)
40 Female (70%)
27 Male (30%)
Self-reported race/ethnicity
White 56 (72%) 39 (68%)
Black 8 (10%) 7 (12%)
Hispanic 6 (8%) 4 (7%)
Asian 8 (10%) 7 (12%)