Esophageal Cancer
Copyright ©The Author(s) 2002.
World J Gastroenterol. Feb 15, 2002; 8(1): 49-53
Published online Feb 15, 2002. doi: 10.3748/wjg.v8.i1.49
Table 1 Comparability of age and gender in cases and controls
FactorCaseControlχ2P
Age(year)
< 502816
50-3844
≥ 6061414.730.094
Gender
Male9778
Female30230.020.80