From: Chronic typhoid infection and the risk of biliary tract cancer and stones in Shanghai, China
 |  |  | Biliary Tract Cancer | Biliary Stones | ||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
Characteristics | Controls | Gallbladder | Extrahepatic Bile Duct | Ampulla of Vater | Gallbladder Stones | Bile Duct Stones | ||||||
 | N | % | N | % | N | % | N | % | N | % | N | % |
Total | 859 | 100.0 | 262 | 100.0 | 140 | 100.0 | 55 | 100.0 | 728 | 100.0 | 249 | 100.0 |
Age | Â | Â | Â | Â | Â | Â | Â | Â | Â | Â | Â | Â |
   <55 | 113 | 13.2 | 36 | 13.7 | 21 | 15.0 | 5 | 9.1 | 230 | 31.6* | 56 | 22.5* |
   55 - 64 | 247 | 28.8 | 64 | 24.4 | 37 | 26.4 | 13 | 23.6 | 207 | 28.4 | 75 | 30.1 |
   ≥65 | 499 | 58.1 | 162 | 61.8 | 82 | 58.6 | 37 | 67.3 | 291 | 40.0 | 118 | 47.4 |
Sex | Â | Â | Â | Â | Â | Â | Â | Â | Â | Â | Â | Â |
   Male | 335 | 39.0 | 72 | 27.5* | 84 | 60.0* | 30 | 54.6* | 250 | 34.3* | 120 | 48.2 |
   Female | 524 | 61.0 | 190 | 72.5 | 56 | 40.0 | 25 | 45.5 | 478 | 65.7 | 129 | 51.8 |
Education (% > Middle school) | 293 | 34.1 | 57 | 21.8 | 45 | 32.4 | 16 | 29.1 | 313 | 43.0 | 94 | 37.8 |
Smoking (%)†| 259 | 30.2 | 69 | 26.4 | 63 | 45.0* | 25 | 45.5* | 177 | 24.3* | 92 | 37.0 |
Alcohol Use (%)‡ | 177 | 20.6 | 42 | 16.0 | 45 | 32.1* | 14 | 25.5 | 110 | 15.1* | 48 | 19.4 |
Diabetes (%) | 71 | 8.3 | 34 | 13.0* | 12 | 8.6 | 3 | 5.5 | 78 | 10.7* | 29 | 11.7* |
Hypertension (%) | 360 | 41.9 | 94 | 35.9 | 41 | 29.3* | 14 | 25.5* | 249 | 34.2 | 70 | 28.1* |
Gallstones (%) | 150 | 17.5 | 222 | 84.7* | 93 | 66.4* | 29 | 52.7* | - | - | - | - |
Body Mass Index (% ≥25.0) | 251 | 29.3 | 104 | 39.9 | 32 | 22.9 | 19 | 34.6 | 271 | 37.3 | 90 | 36.3 |