Table 1. Descriptive Statistics of Study Participants.
| Variable | Participantsa | |
|---|---|---|
| Placebo (n = 63) | 5.9% or 13.4% THC (n = 121) | |
| Age, mean (SD), y | 28.1 (7.25) | 31.0 (8.65) |
| Sex | ||
| Female | 31 (49.2) | 36 (29.8) |
| Male | 32 (50.8) | 85 (70.2) |
| Educational level, mean (SD), y | 15.0 (1.93) | 15.0 (2.04) |
| Race and ethnicity | ||
| African American | 8 (12.7) | 9 (7.4) |
| Asian | 5 (7.9) | 11 (9.1) |
| Hispanic | 15 (23.8) | 40 (33.1) |
| Indigenous | 5 (7.9) | 3 (2.5) |
| Non-Hispanic White | 28 (44.4) | 52 (43.0) |
| Multiracial | 2 (3.2) | 4 (3.3) |
| Unknown | 0 | 2 (1.7) |
| Distance driven in previous year, median (IQR), mi | 8730 (5420-12 825) | 8960 (5048-13 290) |
| Cannabis use | ||
| Current use <4 times/wk | 34 (54.0) | 62 (51.2) |
| Days used in past 30 d, mean (SD), No. | 16.9 (9.69) | 16.6 (9.94) |
| Amount used in past 30 d, median (IQR), g/d | 0.55 (0.25-1.00) | 0.55 (0.25-1.00) |
| Time since last use, median (IQR), d | 3.00 (3.00-6.00) | 3.00 (2.50-4.00) |
Abbreviation: THC, Δ9-tetrahydrocannabinol.
a
Data are presented as the number (percentage) of participants unless otherwise indicated.