Case Control Study
Copyright ©The Author(s) 2015.
World J Gastroenterol. Jun 14, 2015; 21(22): 6898-6904
Published online Jun 14, 2015. doi: 10.3748/wjg.v21.i22.6898
Table 1 Characteristics of cases and controls in this study n (%)
VariableCasesControlsP value
(n = 360)(n = 310)
Sex< 0.001
Male288 (62.0)197 (36.5)
Female72 (20.0)113 (36.5)
Age, yr (mean ± SD)60.7 ± 8.949.4 ± 7.9< 0.001