Table 6c: 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 90 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

34/34

16/24

73/81

70

5/7

19/22

14/25

38/54

Total

121/123

100/105

60/82

First exposed: 1955-59

<50

14/14

8/8

2/2

24/24

50-59

14/14

22/23

8/9

44/46

60-69

16/17

15/18

6/11

37/46

70

0/0

9/12

2/13

11/25

Total

44/45

54/61

18/35

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

172/177

157/172

79/121

408/470