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Table 2 Odds ratios* (ORs) and 95% confidence intervals (CI) for cancers of the biliary tract cancer and stones in relation to chronic typhoid infection, Shanghai China

From: Chronic typhoid infection and the risk of biliary tract cancer and stones in Shanghai, China

 

Biliary Tract Cancer

Biliary Stones

 

Controlsa

Total

Gallbladder

Extrahepatic Bile Duct

Ampulla of Vater

Controlsb

Biliary Stones

Gallbladder Stones

Bile Duct Stones

Typhoid

N

N OR (95%CI)

N OR (95%CI)

N OR (95%CI)

N OR (95%CI)

N

N OR (95%CI)

N OR (95%CI)

N OR (95%CI)

Total

859

457

262

140

55

654

977

728

249

Negativec

858

456

262

139

55

654

973

726

247

Positive

         

   ≥1:160d

1

1 1.9 (0.1-31.1)

0

1 5.9 (0.4-95.2)

0

0

4

2

2

  1. *OR = odds ratio, adjusted for age and for level of education
  2. a N = 800 for gallbladder cancer controls due to exclusion of those with history of cholecystectomy
  3. b Controls with gallstones were excluded.
  4. c Negative defined as no hemagglutination at <160.
  5. d Positive defined as hemagglutination at ≥ 160.
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Infectious Agents and Cancer

ISSN: 1750-9378

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