Table 3.

Smoking and drinking probabilities.

Birth Year, Sex	P(SMK| founder)	P(SMK|no parents smoke)	P(SMK| 1+ parents smoke)	P(DRINK| SMK)	P(DRINK| No SMK)	P(DRINK)
before 1930
male	0.600	0.375	0.750	0.490	0.390	0.450
female	0.200	0.167	0.333	0.180	0.080	0.100
1931–1940
male	0.600	0.375	0.750	0.540	0.440	0.500
female	0.300	0.231	0.462	0.220	0.120	0.150
1941–1945
male	0.600	0.375	0.750	0.540	0.440	0.500
female	0.350	0.259	0.519	0.265	0.165	0.200
1946–1950
male	0.500	0.333	0.667	0.550	0.450	0.500
female	0.350	0.259	0.519	0.265	0.165	0.200
1951–1955
male	0.450	0.310	0.621	0.655	0.555	0.600
female	0.350	0.259	0.519	0.315	0.215	0.250