. Author manuscript; available in PMC: 2013 Dec 10.

Published in final edited form as: Aliment Pharmacol Ther. 2011 Apr 11;33(11):10.1111/j.1365-2036.2011.04655.x. doi: 10.1111/j.1365-2036.2011.04655.x

Table 1.

Demographic data

	Achalasia	Control	OR	95% CI
Total	896 (100%)	520,601 (100%)
Gender
Female	401 (45%)	250,045 (48%)	1.00
Male	495 (55%)	270,556 (52%)	1.39	(1.22–1.59)
Race
White	739 (83%)	413,329 (79%)	1.00
Non-white	157 (17%)	107,272 (21%)	0.87	(0.74–1.03)
Site type
Community	618 (69%)	379,113 (73%)	1.00
University	195 (22%)	82,036 (16%)	1.51	(1.33–1.78)
VA	83 (9%)	59,452 (11%)	0.69	(0.54–0.88)