American Association for Cancer Research

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Mean*

Median*

Lower estimate*

Upper estimate*

Very confident^†

Confident^†

Not very confident^†

Total mortality

35-49 y

20.4

7

0

100

0

7

2

≥50 y

20.2

5

1

120

1

5

3

Lung cancer

35-49 y

13.6

2

0

100

3

3

3

≥50 y

15.7

3.4

0

120

4

2

3

Heart disease

35-49 y

20.1

10

0

100

0

6

3

≥50 y

14.9

10

1

50

0

5

4

Oral cancer

35-49 y

28.3

22.5

0

100

1

4

4

≥50 y

32.3

30

1

120

0

5

4

Risk estimates are based on a 0-100 point scale, with 0 = no use and 100 = smoking.

No. replies by confidence level.