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. 2020 Dec 1;324(21):2177–2186. doi: 10.1001/jama.2020.21218

Table. Participant Demographics and Characteristics.

Demographic/characteristic Participants, No. (%)
No. 26
Women 16
Men 10
Age, mean (SD), y 23.2 (2.6)
Body mass index, mean (SD)a 21.4 (2.4)
Participants with at least some tertiary education, % 100
Episodes of cannabis use in past 3 mo, median (IQR) 4.5 (1-20)
Years in possession of driver’s license, median (IQR) 5 (4-7)
Average No. of km driven per year, median (IQR) 4500 (3000-8000)
Ever driven while under the influence of cannabis 5 (19.2)
Weekly use of alcohol 10 (38.5)
Prior use of other drugs
Psilocybin 7 (26.9)
Ecstasy/MDMA 6 (23.1)
Cocaine 4 (15.4)
LSD 3 (11.5)
Other 2 (7.7)
Amphetamine 1 (3.8)

Abbreviations: IQR, interquartile range; LSD, lysergic acid diethylamide; MDMA, 3,4-methylenedioxymethamphetamine.

Conversion factor: To convert kilometers to miles, divide the value by 1.609.

a

Calculated as weight in kilograms divided by height in meters squared.