Table 8

Average initiation ages for entry level agents (N = 2498). This table is depicted by Figure 1 and emphasizes the rapid fall in age at initiation of cannabis after it first became available in high schools.


Tobacco
Alcohol
Cannabis

1936–1940
16.07
16.43
26.39
1941–1945
15.86
15.89
21.12
1946–1950
14.98
16.18
18.64
1951–1955
14.88
15.79
16.58
1956–1960
14.8
15.25
15.87
1961–1965
14.74
14.71
15.66
1966–1970
15.28
14.84
14.92
1971–1975
15.08
15.04
15.68
1976–1980
14.99
15.22
15.15
1981–1985
14.29
14.66
14.32

O'Connell and Bou-Matar Harm Reduction Journal 2007 4:16   doi:10.1186/1477-7517-4-16