Table 1.

Socio-demographic characteristics and ENDS use behaviors (N = 3720).

Mean age in years (SD)	21.4 (2.3)
Sex (% male)	35.7
Race/Ethnicity	–
% White	35.8
% Hispanic	30.2
% Asian	19.5
% Black	7.1
% Other / Multiple	7.4
School Type (% 4-year University)	93.3
ENDS and Marijuana Use Behaviors	Wave 2	Wave 4
Ever used ENDS device	48.6%	54.41%
Past 30-day ENDS use	14.5%	10.4%
Past 6-months use of marijuana in ENDS	−	10.0%
Past 6-months	22.2%	23.1%
Ever use of marijuana in ENDS	21.6%	28.62%