Of 330 pedigrees (4692 individuals), smoking history was available for 2883 individuals, including 1743 (37%) ever-smokers (653 genotyped) and 1140 (24%) never-smokers (402 genotyped). Among smokers, on average, the amount of smoking when individuals smoked their most was 24.2 cigarettes per day (range, 1–95) occurring at an average age of 41.7 years (range, 15–82 years) in 1967 (range 1948–1991).
