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Table 2 Association between rotating shift work and the risk of death from biliary tract cancer in the JACC Study

From: Association between shift work and the risk of death from biliary tract cancer in Japanese men

Biliary tract cancer

      
 

Person-years

Deaths

HR1

95 % CI

HR2

95 % CI

 Daytime work

322,340

78

1.00

 

1.00

 

 Permanent nighttime work

19,565

4

0.81

0.30-2.20

0.86

0.31-2.36

 Rotating shift work

41,042

12

1.43

0.78-2.63

1.50

0.81-2.77

Extrahepatic bile duct cancer

Person-years

Deaths

HR1

95 % CI

HR2

95 % CI

 Daytime work

322,340

56

1.00

 

1.00

 

 Permanent nighttime work

19,565

4

1.13

0.41-3.11

1.19

0.43-3.31

 Rotating shift work

41,042

11

1.83

0.96-3.51

1.93

1.00-3.72

  1. HR: harzard ratio; CI: confidence interval
  2. HR1: adjusted for age
  3. HR2: adjusted for age, body mass index, history of cholelithiasis, history of diabetes, cigarette smoking, alcohol drinking, perceived stress, and sleep time
  4. Data on gallbladder cancer were not shown because only one death occurred from rotating shift workers