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Table 2 Number of all cancers and selected cancer sites among men and women combined in the high-temperature geothermal areas, hazard ratio (HR), 95% confidence intervals (CI) according to compared with the populations in warm reference area and cold reference area, adjusted for age, gender, education, and type of housing

From: Incidence of cancer among residents of high temperature geothermal areas in Iceland: a census based study 1981 to 2010

Cancers (ICD-10)

Geothermal areas

Warm reference area

Cold reference area

 

p-yr 35,707

p-yr 1294,570

p-yr 571,509

 

No of cancers

HR

95%CI

HR

95%CI

All sites (C00-C97 and D45-D47)

184

1.16

1.00 to 1.34

1.22

1.05 to 1.42

Lip, oral cavity, and pharynx (C00-C14)

2

0.64

0.16 to 2.60

0.81

0.20 to 3.38

Oesophagus (C15)

1

0.50

0.07 to 3.58

0.58

0.08 to 4.20

Stomach (C16)

7

1.13

0.53 to 2.41

0.99

0.46 to 2.14

Colon, rectum, and anus (C18-C21)

16

1.13

0.69 to 1.86

1.17

0.70 to 1.94

Bile and liver (C22-C24)

2

0.95

0.23 to 3.88

1.02

0.24 to 4.29

Pancreas (C25)

9

2.57

1.30 to 5.07

2.85

1.39 to 5.86

Nasal cavity and middle ear (C30)

1

3.32

0.42 to 26.32

2.58

0.30 to 22.33

Larynx (C32)

2

2.21

0.53 to 9.30

3.04

0.66 to 13.98

Lung and bronchus (C33-C34)

20

1.24

0.80 to 1.95

1.11

0.70 to 1.75

Bone (C40-C41)

2

3.56

0.83 to 15.27*

5.80

1.11 to 30.32*

Melanoma (C43)

2

0.51

0.13 to 2.04

0.62

0.15 to 2.56

Other cancer of skin (C44)

4

0.84

0.31 to 2.27

1.01

0.37 to 2.79

Soft tissue sarcoma (C49)

2

1.86

0.45 to 7.78

1.97

0.45 to 8.66

Breast (C50)

31

1.43

1.00 to 2.05

1.59

1.10 to 2.31

Vulva (C51)

1

4.03

0.50 to 32.36

2.96

0.34 to 25.58

Cervix uteri (C53)

2

0.85

0.21 to 3.45

1.04

0.25 to 4.37

Uterus (C54-C55)

3

0.82

0.26 to 2.60

0.88

0.27 to 2.82

Ovary (C56-C57)

5

1.25

0.51 to 3.05

1.25

0.50 to 3.12

Prostate (C61)

29

1.16

0.80 to 1.68

1.37

0.93 to 2.00

Kidney (C64-C66)

5

0.67

0.28 to 1.62

0.83

0.34 to 2.04

Bladder (C67)

8

1.12

0.56 to 2.28

1.02

0.50 to 2.10

Brain and central nervous system (C70-C72, C75.1 and C75.3)

5

0.82

0.34 to 2.00

0.90

0.37 to 2.23

Thyroid gland (C73)

6

1.51

0.66 to 3.42

1.51

0.65 to 3.50

Cancer without specification of site (C80)

1

0.32

0.04 to 2.26

0.28

0.04 to 2.05

Lymphoid and haematopoietic tissue (C81-C96 and D45-D47)

18

1.53

0.95 to 2.46

1.64

1.00 to 2.66

Hodgkins lymphoma (C81)

1

1.03

0.14 to 7.56

1.50

0.19 to 11.61

Non-Hodgkins lymphoma (C82-C85)

12

3.21

1.77 to 5.82

3.25

1.73 to 6.07

Immunoproliferative diseases (C88)

1

1.31

0.18 to 9.76

2.00

0.24 to 16.40

Leukaemia (C91-C95 and D45-D47)

4

1.07

0.39 to 2.89

1.07

0.39 to 2.95

Chronic lymphocytic leukaemia (CLL)(C91.1)

1

0.76

0.10 to 5.54

0.70

0.09 to 5.24

Non-CLL (C91-C95 and D45-D47, except C91.1)

3

1.23

0.39 to 3.90

1.30

0.40 to 4.22

Not included in all cancers

p-yr 36,606

p-yr 1320,220

 

p-yr 581,772

 

Basal cell carcinoma of the skin

30

1.37

0.95 to 1.97

1.61

1.10 to 2.35

  1. Abbreviation: p-yr, person years.
  2. Statistically significant HRs are bolded.
  3. * 95% CI computed with bootstrap method were wide and included unity.