Table 1 Distribution of selected characteristics in the study subjects
Cases No.(%) | Controls No.(%) | ||||
|---|---|---|---|---|---|
Gastrointestinal cancer | Gastric cancer | Colon cancer | Rectal cancer | ||
No. of subjects | 296 | 90 | 93 | 103 | 448 |
Gender | |||||
Male | 169(57.09) | 64(71.11) | 48(51.61) | 57(50.44) | 223(49.78) |
Female | 127(42.91) | 26(28. 89) | 45(48.39) | 56(49.56) | 225(50.22) |
Age | |||||
Mean ± SD | 61.76 ± 9.92 | 64.68 ± 9.01 | 61.59 ± 8.87 | 59.57 ± 10.89 | 60.67 ± 10.92 |
Smoking | |||||
No | 156(52.70) | 33(36.67) | 53(56.99) | 70(61.95) | 269(60.04) |
Yes | 140(47.30) | 57(63.33) | 40(43.01) | 43(38.05) | 179(39.96) |
Drinking | |||||
No | 202(68.24) | 56(62.22) | 65(69.89) | 81(71.68) | 322(71.88) |
Yes | 94(31.76) | 34(37.78) | 28(30.11) | 32(28.32) | 126(28.13) |
Family history | |||||
No | 212(71.62) | 68(75.56) | 68(73.12) | 76(67.26) | 338(75.45) |
Yes | 84(28.38) | 22(24.44) | 25(26.88) | 37(32.74) | 110(24.55) |
H-RAS T81C | |||||
TT | 204(68.92) | 48(53.33) | 71(76.34) | 85(75.22) | 355(79.24) |
TC | 88(29.73) | 40(44.44) | 20(21.51) | 28(24.78) | 89(19.87) |
CC | 4(1.35) | 2(2.22) | 2(2.15) | 0(0.00) | 4(0.89) |
Allele frequencies | |||||
T | 496(83.78) | 136(75.56) | 162(87.10) | 198(87.61) | 799(89.17) |
C | 96(16.22) | 44(24.44) | 24(12.90) | 28(12.39) | 97(10.83) |