Table 1.
Demographics of Study Participants by Treatment Group (N=40)
| Characteristics | Overall (N=40) | CBD (n=21) | Placebo (n=19) | p-Value |
|---|---|---|---|---|
| Age in years, mean (SD)a | 21.2 (2.7) | 21.4 (2.8) | 21.0 (2.7) | 0.57 |
| Male, n (%)b | 19 (47.5) | 10 (47.6) | 9 (47.4) | 0.99 |
| White, n (%)c | 34 (85.0) | 18 (85.7) | 16 (84.2) | 1.00 |
| BMI, mean (SD)d | 26.0 (5.2) | 26.3 (6.3) | 25.6 (3.6) | 0.70 |
| Undergraduate student, n (%)b | 28 (70.0) | 13 (61.9) | 15 (79.0) | 0.24 |
| Employed full or part-time, n (%)b | 21 (52.5) | 11 (52.4) | 10 (52.6) | 0.99 |
| Hours spent playing video games per weeka | 7.1 (10.2) | 5.6 (5.1) | 8.6 (13.8) | 0.66 |
| Miles driven per week, mean (SD)a | 49.5 (52.7) | 49.9 (60.5) | 48.9 (43.7) | 0.60 |
| Risky driving score, mean (SD)d | 8.4 (6.4) | 6.8 (6.5) | 10.2 (5.9) | 0.09 |
| Ever used CBD, n (%)c | 9 (23.1) | 4 (19.1) | 5 (27.8) | 0.71 |
a
p-Value calculated with Mann‒Whitney U test comparing the CBD with the placebo group.
b
p-Value calculated with chi-square test comparing the CBD with the placebo group.
c
p-Value calculated with Fisher's exact test owing to small cell counts comparing the CBD with the placebo group.
d
p-Value calculated with Student's t test comparing the CBD with the placebo group.
CBD, cannabidiol.