Table 1 Demographic characteristics and possible risk variables of the study subjects*
Variables | Control s (n = 50) | BCH (n = 50) | ESCD (n = 50) | ESCC (n = 50) |
|---|---|---|---|---|
Gender, n(%) | ||||
male | 35(70.0) | 35(70.0) | 30(60.0) | 30(60.0) |
female | 15(30.0) | 15(30.0) | 20(40.0) | 20(40.0) |
age(years), n(%) | ||||
40~50 | 19(38.0) | 19(38.0) | 8(16.0) | 7(14.0) |
51~60 | 18(36.0) | 18(36.0) | 25(50.0) | 23(46.0) |
61~70 | 13(26.0) | 13(26.0) | 17(34.0) | 20(40.0) |
Smoking index, n(%) | ||||
Never | 24(48.0) | 24(48.0) | 25(50.0) | 24(48.0) |
1~600 | 13(26.0) | 13(26.0) | 14(28.0) | 14(28.0) |
≥ 600 | 13(26.0) | 13(26.0) | 11(22.0) | 12(24.0) |
Drinking index, n(%) | ||||
Never | 19(38.0) | 19(38.0) | 26(52.0) | 25(50.0) |
< 100 | 15(30.0) | 15(30.0) | 14(28.0) | 8(16.0) |
≥ 100 | 16(32.0) | 16(32.0) | 10(20.0) | 17(34.0) |
Family history of esophageal cancer, n(%) | ||||
No | 39(78.0) | 39(78.0) | 43(86.0) | 44(88.0) |
yes | 11(22.0) | 11(22.0) | 7(14.0) | 6(12.0) |
Education: | ||||
Illiterate or primary school | 9(18.0) | 8(16.0) | 25(50.0) | 37(74.0) |
Junior high school and over | 41(82.0) | 42(84.0) | 25(50.0) | 13(26.0) |
per capita annual income($) | ||||
< 300 | 6(12.0) | 2(4.0) | 12(24.0) | 19(38.0) |
300- | 16(32.0) | 15(30.0) | 8(16.0) | 22(44.0) |
≥ 600 | 28(56.0) | 33(66.0) | 30(60.0) | 9(18.0) |