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Table 3 Hazard ratios (HR) and 95% confidence intervals (CI) for selected cancers among male agricultural workers in CanCHEC (1991–2010)

From: Cancer risks in a population-based study of 70,570 agricultural workers: results from the Canadian census health and Environment cohort (CanCHEC)

Cancer Site (ICD-O-3)

Agricultural Workers

Farmers and managers

Manual labourers

Cases

HR

(95% CI)a

Cases

HR

(95% CI)a

Cases

HR

(95% CI)a

Any cancerb

7295

0.95

(0.93–0.98)

5415

0.94

(0.92–0.97)

1880

0.98

(0.93–1.02)

Prostate (C61.9)

2625

1.11

(1.06–1.16)

2025

1.12

(1.07–1.17)

600

1.08

(0.99–1.17)

Lung (C34)

995

0.75

(0.70–0.80)

690

0.69

(0.64–0.75)

305

0.90

(0.81–1.01)

Colon (C18, C26.0)

640

0.89

(0.82–0.97)

485

0.90

(0.82–0.99)

155

0.88

(0.75–1.03)

Rectum (C19.9, C20.9)

440

1.05

(0.95–1.16)

340

1.09

(0.97–1.22)

100

0.94

(0.77–1.15)

Non-Hodgkin Lymphomac

500

1.10

(1.00–1.21)

375

1.11

(0.99–1.24)

125

1.09

(0.91–1.30)

Bladder (C67)

430

0.82

(0.74–0.91)

325

0.83

(0.73–0.93)

105

0.82

(0.67–1.00)

Melanoma (C44)

275

1.15

(1.02–1.31)

215

1.21

(1.05–1.39)

60

1.00

(0.77–1.29)

Leukemiac

265

1.11

(0.97–1.27)

200

1.14

(0.98–1.32)

65

1.03

(0.80–1.32)

Oral (C00-C14)

250

1.04

(0.91–1.19)

170

0.97

(0.82–1.14)

80

1.24

(0.99–1.55)

 Lip (C00.0-C00.9)

110

2.14

(1.70–2.70)

90

2.25

(1.75–2.90)

20

1.80

(1.15–2.84)

Kidney (C64.9)

230

0.77

(0.67–0.89)

175

0.78

(0.67–0.92)

55

0.74

(0.57–0.97)

Stomach (C16)

225

0.90

(0.78–1.04)

160

0.87

(0.74–1.03)

65

0.99

(0.77–1.26)

Pancreas (C25)

175

0.90

(0.77–1.06)

125

0.86

(0.71–1.03)

50

1.03

(0.77–1.36)

Multiple myelomac

135

1.15

(0.95–1.38)

100

1.14

(0.92–1.41)

35

1.17

(0.84–1.64)

Brain (C70-C72)

110

0.89

(0.73–1.08)

75

0.84

(0.66–1.06)

35

1.01

(0.72–1.41)

Esophagus (C15)

95

0.87

(0.70–1.08)

65

0.78

(0.60–1.00)

30

1.15

(0.80–1.65)

Thyroid (C73.9)

60

1.05

(0.79–1.38)

45

1.06

(0.77–1.47)

15

1.00

(0.59–1.70)

Larynx (C32)

55

0.54

0.41–0.71)

30

0.39

(0.27–0.56)

25

0.96

(0.64–1.43)

Liver (C22.0, C22.1)

45

0.51

(0.38–0.68)

30

0.43

(0.30–0.62)

15

0.75

(0.47–1.20)

Testis (C62)

30

0.97

(0.69–1.37)

20

1.02

(0.66–1.56)

10

0.90

(0.52–1.56)

Hodgkin Lymphomac

25

0.78

(0.49–1.25)

15

0.66

(0.36–1.22)

10

1.02

(0.51–2.07)

Mesotheliomac

20

0.57

(0.36–0.90)

15

0.56

(0.33–0.95)

5

0.59

(0.24–1.43)

Breast (C50)

20

1.27

(0.74–2.15)

10

0.96

(0.48–1.91)

10

2.08

(0.97–4.44)

Nasal (C30)

15

0.71

(0.39–1.29)

10

0.77

(0.38–1.53)

5

0.60

(0.22–1.65)

Bone (C40, C41)

5

0.69

(0.36–1.32)

<5

-

-

<5

-

-

  1. Note: case counts below 5 have been suppressed and all counts have been randomly rounded to base 5 in accordance with Statistics Canada disclosure rules
  2. aAdjusted for age at baseline (age group categories), province of residence at baseline, and education level at baseline
  3. bIncident primary cancers excluding non-melanoma skin cancer
  4. cCancers defined using ICD-O-3 Histology codes: Mesothelioma (9050–9055), Hodgkin lymphoma (9650–9667); non-Hodgkin lymphoma (9590–9596,9670–9719, 9727–9729, 9823, 9827); Multiple myeloma (9731,9732,9734); Leukemia (9733, 9742, 9800–9801, 9805, 9820, 9826, 9831–9837, 9840, 9860–9861, 9863, 9866–9867, 9870–9876,9891,9895–9897,9910, 9920, 9930–9931, 9940, 9945–9946, 9948, 9963–9964, 9823, 9827)