Skip to main content

Table 2 Cancer sites considered in the 32 included studies

From: Meta-analysis of the relation between European and American smokeless tobacco and oral cancer

Cancer site

Study numbers

 

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

32

Buccal mucosa

 

X

X

X

X

   

X

  

X

            

X

X

      

Floor of mouth

 

X

X

X

X

   

X

     

X

  

X

 

X

    

X

X

   

X

  

Gingiva

    

X

                   

X

       

Gum/palate

 

a

X

 

X

   

X

X

 

X

  

X

  

X

 

X

    

X

X

  

X

X

  

Lip

X

a

X

 

X

  

X

 

X

    

X

   

X

X

        

X

   

Oral cavity/mouth

  

X

  

X

X

  

X

X

 

X

X

 

X

X

X

  

X

X

X

X

X

X

X

 

X

X

X

X

Pharynx/alveolus

 

X

X

X

b

X

X

 

X

X

  

X

X

X

X

X

  

X

X

X

X

 

X

X

X

  

X

X

X

Tongue

 

a

X

 

X

    

X

    

X

 

X

X

 

X

    

X

X

  

X

X

  

Tonsils

 

a

X

                     

X

    

X

  

Salivary glands

    

X

    

X

    

X

            

X

    

Unspecified

    

b

   

X

     

X

 

Xc

  

X

   

X

     

X

  
  1. a Specifically excluded by author
  2. b Due to the joint reporting of pharynx and larynx cases, both sites were excluded from analyses
  3. c Larynx cases could not be excluded due to incomplete reporting
Back to article page

BMC Public Health

ISSN: 1471-2458

Contact us