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Table 5 Odds ratio for lung cancer associated with occupational exposure to wood dust by histological types

From: Occupational exposure to wood dust and risk of lung cancer in two population-based case–control studies in Montreal, Canada

  

Squamous cell

Small cell

Adenocarcinoma

Large cell and others

 

Controls

Cases

OR*

95% CI

Cases

OR*

95% CI

Cases

OR*

95% CI

Cases

OR*

95% CI

Study I

Population controls

                

No exposure

389

255

1.0

(ref)

116

1.0

(ref)

131

1.0

(ref)

128

1.0

(ref)

Any level of exposure

144

104

0.8

0.5

1.2

43

0.7

0.4

1.2

36

0.5

0.3

0.8

44

0.7

0.4

1.1

Non-subst. level

74

49

0.8

0.5

1.2

19

0.6

0.3

1.2

21

0.7

0.4

1.2

24

0.7

0.4

1.3

Substantial level

70

55

0.8

0.5

1.4

24

0.8

0.4

1.5

15

0.3

0.2

0.7

20

0.6

0.3

1.1

Study I

Cancer Controls

            

No exposure

1072

255

1.0

(ref)

116

1.0

(ref)

131

1.0

(ref)

128

1.0

(ref)

Any level of exposure

272

104

1.3

0.9

1.8

43

1.2

0.7

1.8

36

1.0

0.6

1.5

44

1.1

0.7

1.7

Non-subst. level

161

49

1.0

0.7

1.5

19

0.9

0.5

1.5

21

1.0

0.6

1.7

24

1.0

0.6

1.7

Substantial level

116

55

1.7

1.1

2.6

24

1.6

0.9

2.8

15

0.9

0.5

1.7

20

1.2

0.7

2.1

Study II

Population Controls

            

No exposure

640

166

1.0

(ref)

87

1.0

(ref)

171

1.0

(ref)

77

1.0

(ref)

Any level of exposure

254

95

1.2

0.8

1.7

38

0.8

0.5

1.3

70

1.1

0.8

1.7

32

1.1

0.7

1.9

Non-subst. level

201

72

1.1

0.8

1.7

26

0.6

0.3

1.1

50

1.0

0.6

1.5

19

0.8

0.5

1.5

Substantial level

53

23

1.3

0.7

2.5

12

1.8

0.8

4.3

20

1.9

1.0

3.7

13

2.7

1.2

6.0

  1. *adjusted for age, ethnolinguistic group, years of education, median family income, respondent status, cigarette index and IARC Group 1 known carcinogens (asbestos, diesel exhaust, formaldehyde, cadmium, chromium VI, nickel and silica).