Table 1 General characteristics of subjects
Characteristics | Controls | Gastric cancer | Colorectal cancer |
|---|---|---|---|
No | 1700 | 2213 | 1829 |
Age, mean,years | 52.2 ± 14.3 | 60.2 ± 12.1* | 61.9 ± 11.4** |
   ≤ 65 years | 1321(77.7) | 1314(59.4) | 985(53.9) |
   >65 years | 379(22.3) | 899(40.6)* | 844(46.1)** |
Sex | Â | Â | Â |
   Male | 821(48.3) | 1510(68.2) | 1149(62.8) |
   Female | 879(51.7) | 703(31.8)* | 680(37.2)** |
Smoking habitat | Â | Â | Â |
   Never | 1000(58.8) | 1127(50.9) | 1137(62.2) |
   Ever | 655(38.5) | 997(45.1)* | 582(31.8)** |
   missing | 45(2.6) | 89(4.0) | 110(6.0) |
Drinking habitat | Â | Â | Â |
   Non-drinker | 825(48.5) | 1198(54.1) | 1084(59.3) |
   Drinker | 833(49.0) | 921(41.6)* | 623(34.1)** |
   Missing | 42(2.5) | 94(4.3) | 122(6.7) |
TNM Stage | Â | Â | Â |
   I |  | 1138(51.4) | 291(15.9) |
   II |  | 305(13.8) | 547(29.9) |
   III |  | 290(13.1) | 615(33.6) |
   IV |  | 386(17.4) | 230(12.6) |
   Unspecified stage |  | 94(4.2) | 147(8.0) |
Tumor site | Â | Â | Â |
   Gastric cancer |  |  |  |
Cardiac | Â | 106(4.8) | Â |
Non-cardiac | Â | 2093(94.6) | Â |
Unspecified site | Â | 14(0.6) | Â |
Colorectal cancer | Â | Â | Â |
   Colon |  |  | 833(45.5) |
   rectum |  |  | 996(54.5) |
Histological type | Â | Â | Â |
   Intestinal |  | 1286(58.1) |  |
   Diffuse |  | 561(25.4) |  |
   Mixed |  | 240(10.8) |  |
   Unspecified type |  | 126(5.7) |  |