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. Author manuscript; available in PMC: 2019 Jul 1.
Published in final edited form as: Drug Alcohol Depend. 2018 May 19;188:334–340. doi: 10.1016/j.drugalcdep.2018.04.014

Table 1.

Number and percent of participants who used cannabis, vaped cannabis, used ENDS, and used tobacco in their lifetime (T1) and since the first survey (T2). Number and percent of participants who were abstainers, discontinuers, sustainers, or initiators of cannabis use, vaping cannabis, and ENDS use.

Number (Percent) reported

T1 T2 Across both assessments
Cannabis use 627 (47.8) 597 (45.5)
 Abstainers 579 (44.1)
 Discontinuers 136 (10.4)
 Sustainers 491 (37.4)
 Initiators 106 (8.1)
Vape cannabis 223 (17.0) 177 (13.5)
 Abstainers 1012 (77.1)
 Discontinuers 124 (9.5)
 Sustainers 99 (7.5)
 Initiators 78 (5.9)
ENDS use1 285 (21.7) 132 (10.1)
 Abstainers 979 (74.6)
 Discontinuers 201 (15.3)
 Sustainers 84 (6.4)
 Initiators 48 (3.7)
Tobacco use 291 (22.2) 195 (14.9)

Note. Based on participants’ self-report of lifetime use of cannabis, vaping cannabis, and ENDS, respectively, at T1 and T2, each participant was categorized into one of four categories: 1) abstainers were participants who did not use that substance at either time point, 2) discontinuers were participants who used that substance––at T1 but not at T2, 3) initiators were participants who used that substance at T2 but not at T1, and 4) sustainers were participants who used that substance at both time points.

1

Any ENDS use other than vaping cannabis.