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. Author manuscript; available in PMC: 2021 Nov 1.
Published in final edited form as: Addict Behav. 2020 Jul 2;110:106539. doi: 10.1016/j.addbeh.2020.106539

Table 1:

Number and Percentage of Participants by Onset and Duration Category (N=614)

Experimenter (1 to 5 years) Long-Term User (> 5 years) TOTAL
Adolescent Onset (<17) 52 (8.5%) 294 (47.9%) 346 (56.4%)
Adult Onset (17+) 92 (15.0%) 176 (28.7%) 268 (43.6%)
TOTAL 144 (23.5%) 470 (76.5%)

χ2=31.33, p<.001