Table 1
Multiplicative model (F
1
,F
2
,F
3
,F
4
) and the population distribution of exposure
Group
Proportion of deaths attributed to
Background
Asbestos only
Smoking only
Both factors
A
−
S
−
1
—
—
—
A
+
S
−
1/F
2
(F
2
−1)/F
2
—
—
A
−
S
+
1/F
3
—
(F
3
−1)/F
3
—
A
+
S
+
1/F
4
(F
2
−1)/F
4
(F
3
−1)/F
4
(1−F
2
−F
3
+F
4
)/F
4