Table 1.

Smoking frequency among offspring of smokers and nonsmokers

Smoking prevalence = 40%Heritability of smoking
0.10.20.30.40.50.60.70.8
Smoking frequency among offspring of smokers (%)41.943.845.747.649.651.553.455.3
Smoking frequency among offspring of nonsmokers (%)38.737.536.234.933.632.331.129.8
Heritability of smoking = 0.5
Smoking prevalence in the general population
10%20%30%40%50%60%70%80%
Smoking frequency among offspring of smokers (%)20.031.240.849.657.966.174.282.4
Smoking frequency among offspring of nonsmokers (%)8.917.225.433.642.150.960.270.6