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Table 1 Baseline characteristics in the high-temperature geothermal areas and different reference areas according to census 1981

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

 

Geothermal areas N (%)

Warm reference area N (%)

Cold reference area N (%)

Number of people

1,497 (100)

50,878 (100)

22,431 (100)

Gender

   

Men

767 (51.2)

26,431 (51.9)

11,929 (53.2)

Woman

730 (48.8)

24,447 (48.1)

10,502 (46.8)

Age, year

   

Mean ± SD

29.69 ± 17.22

28.12 ± 16.28

28.06 ± 16.20

Median, IQR (0.25 ; 0.75)

27 (15 ; 43)

25 (15 ; 40)

25 (15 ; 39)

Education

   

Basic education

368 (24.6)

13,831 (27.2)

6,565 (29.3)

Medium education

428 (28.6)

13,414 (26.4)

5,665 (25.3)

Academic education

140 (9.4)

3,653 (7.2)

1,428 (6.4)

Unclassified

535 (35.7)

19,404 (38.1)

8,481 (37.7)

Missing

36 (1.7)

576 (1.1)

292 (1.3)

Housing

   

Single family home

1,205 (80.5)

33,761 (66.4)

17,343 (77.3)

Other type of house

292 (19.5)

17,117 (33.6)

5,088 (22.7)

Region

   

Capital region

0

0

0

Other urban regions

0

20,958 (41.2)

4,863 (21.7)

Rural regions

1,497 (100.0)

29,920 (58.8)

17,568 (78.3)

  1. Abbreviations: SD standard deviation, IQR interquartile range.