Table 1. Demographics of the Study Groups.
| Demographics (SD) | Healthy volunteers (n=12) | Cannabis users (n=13) | |
|---|---|---|---|
| Age (years) | 26.08 (3.8) | 24.23 (4.9) | |
| Gender | Male | 7 | 6 |
| Female | 5 | 7 | |
| Mother PBI | 33.75 (6.9) | 42.62 (7.8) | |
| Smoking status | Non-smoker | 11 | 10 |
| Smoker | 1 | 3 | |
| Cannabis use | Lifetime use (joints) | n/a | 7859.85 (10566.6) |
| Years of cannabis use | n/a | 9.23 (4.9) | |
| Age at first use (years) | n/a | 14.92 (1.3) | |
| Number of joints per week | SMCT | n/a | 15.50 (15.5) |
| MIST | n/a | 14.55 (13.1) | |
| Hours since last joint smoked | SMCT | n/a | 9.18 (5.6; range 2–18.5) |
| MIST | n/a | 11.5 (7.5; range 1–21.5) | |
| Cannabinoids value (μg/l) | SMCT | n/a | 1558.7 (2934.2) |
| MIST | n/a | 2130.2 (3550.3) |
Presented as means and standard deviation (SD) showing no significant differences in age (t=1.042, df=1,23, p=0.308), gender (chi-square 0.371, p=0.543) and smoking status (chi-square 1.009, p=0.315). Cannabis users had a significantly higher mother pbi values (t=−2.998, df=1,23, p=0.006). In cannabis users, there was no significant difference in any cannabis use parameters between the control (smct) and stress (mist) tasks.