Table 1.
Demographic and self-reported drug use characteristics of 6 adult cannabis smokers at the time of study qualification.
| Participant | Mean | SE | Median | ||||||
|---|---|---|---|---|---|---|---|---|---|
| A | B | C | D | E | F | ||||
| Age, years | 20 | 32 | 26 | 18 | 23 | 21 | 23.9 | 2.1 | 22.5 |
| BMI, kg/m2 | 17.8 | 29.8 | 25.1 | 23.7 | 21.1 | 22.9 | 23.4 | 1.6 | 23.3 |
| Cannabis joints smoked per day | 6 | 3 | 24 | 3 | 6 | 1 | 7.2 | 3.5 | 4.5 |
| No. days used cannabis in past 14 | 13 | 13 | 14 | 12 | 14 | 14 | 13.3 | 0.3 | 13.5 |
| Days since last cannabis use | 1 | 1 | 1 | 0 | 1 | 1 | 0.8 | 0.2 | 1 |
| Lifetime cannabis use, years | 4 | 18 | 13 | 4 | 10 | 4 | 9.4 | 2.4 | 7.5 |
| Age at first cannabis use, years | 16 | 14 | 13 | 14 | 13 | 17 | 14.5 | 0.7 | 14 |
| No. alcoholic drinks per occasion | 2 | 2 | 4 | 1.5 | 6 | 10 | 4.3 | 1.3 | 4 |
| No. alcohol drinking occasions per week | 0.5 | 0.08 | 1 | 0.25 | 2 | 3 | 1.1 | 0.5 | 1 |
| No. tobacco smoking occasions per week | 70 | 3 | 76 | 10.5 | 0 | 21 | 30.1 | 13.9 | 21 |
| Other drugs | |||||||||
| Substance | NAa | NA | A | O | O | O,C,T,H | |||
| Frequency | NA | NA | Once past 3 months | Once past 3 months | 1.5 years ago | Each once in past 2 years | |||
a
NA, none admitted; A, amphetamines; O, opiates; C, cocaine; T, tranquilizers; H, hallucinogens.