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. Author manuscript; available in PMC: 2023 Mar 1.
Published in final edited form as: Drug Alcohol Depend. 2022 Jan 19;232:109311. doi: 10.1016/j.drugalcdep.2022.109311

Table 1.

Participant demographics and vaping characteristics for the full study sample (N=27) and separated by treatment group (CM or Monitoring).

Full Sample (N=27) CM (n=22) Monitoring (n=5)
Age – Mean (SD) 20.3 (1.2) 19.9 (1.2) 20.6 (0.5)
Gender – N (%)
Women 18 (66.7) 15 (68.2) 3 (60)
Men* 9 (33.3) 6 (27.3) 2 (40)
Race – N (%)
White 24 (88.9) 19 (86.4) 5 (100)
Asian 2 (7.4) 2 (9.1) 0
Multi-racial 1 (3.7) 1 (4.5) 0
Ethnicity – N (%)
Hispanic 4 (14.8) 3 (13.6) 1 (20)
Non-Hispanic 23 (85.2) 19 (86.4) 4 (80)

Age of vaping initiation – M (SD) 16.3 (1.2) 16.2 (1.2) 16.9 (0.9)
Age of regular vaping (>1x/week) – M (SD) 17.6 (1.5) 17.34 (1.6) 18.6 (0.9)
Months vaping – M (SD) 31.1 (16.0) 33.1 (15.7) 22 (16.1)

E-cigarette used – N (%)
Cartridge/pod (e.g., JUUL) 15 (55.6) 13 (59.1) 2 (40)
Disposable (e.g., Blu) 8 (29.6) 5 (22.7) 3 (60)
Tank system or Other 4 (14.8) 4 (18.2) 0

Days vaped in past 30 days – M (SD) 28.5 (4.3) 28.2 (4.8) 29.6 (0.9)
# vaping episodes per day in past 30 days – M (SD) 19.8 (14.9) 20.4 (15.4) 20.4 (13.4)
Minutes per vaping episode – M (SD) 6.5 (13.4) 7.4 (15) 3.6 (2.6)
Puffs per vaping episode – M (SD) 7.7 (11.7) 8.7 (13.1) 3.2 (1.1)
ECDI score – M (SD) 12.4 (3.6) 12.3 (3.7) 13.4 (3.9)

Interest in quitting 1 (low) - 10 (high) – M (SD) 8.5 (1.4) 8.4 (1.3) 8.8 (1.8)
Past year quit attempt – N (%) 21 (77.8) 18 (81.8) 3 (60)

Smoked > 100 lifetime cigarettes – N (%) 6 (21.4) 5 (22.7) 1 (20)
History of regular (>1x/week) smoking – N (%) 8 (28.6) 6 (27.3) 2 (40)

Note:

*

Includes cisgender and transgender men.

ECDI = Penn State Electronic Cigarette Dependence Inventory (Foulds et al., 2015), score range 0 (low) – 20 (high). One participant the CM group was under the age of 18.