Table 6b: Lung cancer cases which are "more likely than not" due to radon progeny exposure and total cases by age and years since last radon exposure. Estimated relative risks are increased to incorporate statistical uncertainty at the 80 percent level. Cases from pooled Colorado and New Mexico studies.

Years since last exposure

Age at disease

<10

10-19

20

Total

First exposed: <1955

<50

39/39

9/9

4/4

52/52

50-59

54/54

38/40

26/29

118/123

60-69

23/23

33/34

16/24

72/81

70

4/7

19/22

9/25

32/54

Total

120/123

99/105

55/82

First exposed: 1955-59

<50

14/14

8/8

2/2

24/24

50-59

14/14

22/23

6/9

42/46

60-69

15/17

13/18

5/11

33/46

70

0/0

8/12

2/13

10/25

Total

43/45

51/61

15/35

First exposed: 1960

<50

4/4

2/2

1/1

7/7

50-59

3/3

1/1

0/0

4/4

60-69

0/2

0/2

0/2

0/6

70

0/0

0/1

0/1

0/2

Total

7/9

3/6

1/4

Total-all

170/177

153/172

71/121

394/470