Table 1.

Characteristics of the 38 Participants Who Completed the Cannabidiol Study

Gender (M:F)	19:19
Age (years)	23.6 (0.66)
Education (years)	15.2 (0.27)
Race
Caucasian	22
African American	10
Other	6
Recent (past month) substance use
Alcohol (drinks/week)	5.28 (0.64); n=35
Cigarettes (cigs/week)	8.58 (5.32); n=7
Caffeine (cups/day)	1.32 (0.23); n=33
Cannabis (times/month)	5.12 (1.02); n=14
Lifetime substance use (% ever used)
Cannabis	94.7
Hallucinogens	23.7
Stimulants	15.8
Opiates	7.9
MDMA	18.4
Sedatives	5.3

Age, education, and past month recent substance use are listed as mean (SEM). For recent substance use, the mean and SEM were calculated using only subjects who reported any recent use of the drug (n for each drug type is shown). Remaining subjects reported no recent use of the drugs. Race is number of individuals who identify as such (“Other” is mainly Asian). Lifetime substance use refers to nonmedical use only.

SEM, standard error of the mean.