Table 2. Cannabis use indices.
| Cannabis (n = 36) | Controls (n = 34)a | |
|---|---|---|
| Age of first use | 16.97 (2.06) | 17.67 (3.12)b |
| Cannabis use (years) | 6.83 (5.12) | - |
| Regular cannabis use (years) | 4.88 (5.43) | - |
| Recency of use (days) | 1.69 (1.92) | |
| Cannabis use frequency over last year | ||
| No use | 0% | 94.1% (n = 32) |
| Less than four times a year | 0% | 5.9% (n = 2) |
| Two or three times a month | 8.3% (n = 3) | 0% |
| Once a week | 8.3% (n = 3) | 0% |
| Twice a week | 30.6% (n = 11) | 0% |
| Three or more times a week | 25.0% (n = 9) | 0% |
| Daily | 27.8% (n = 10) | 0% |
| DFAQ-CU–Age of onset | 16.12 (1.99) | - |
| DFAQ-CU–Daily sessions | 1.61 (0.88) | - |
| DFAQ-CU–Frequency | 5.84 (2.10) | - |
| DFAQ-CU–Marijuana quantity | 1.65 (1.57) | - |
| DFAQ-CU–Concentrate quantity | 0.35 (1.71) | - |
| DFAQ-CU–Edible quantity | 3.08 (3.92) | - |
| TLFB–Days of use over last 30 days | 16.76 (9.69) | 0.03 (0.16) |
| TLFB–Use over last 30 days (grams) | 19.10 (25.35) | 0.04 (0.25) |
Note. Values are expressed as means (standard deviation) unless otherwise noted. DFAQ-CU, Daily Sessions, Frequency, Age of Onset, and Quantity of Cannabis Use Inventory; TLFB, Timeline Follow-back.
aDFAQ-CU indices are not reported for controls as these measures can only be computed for users. The instrument does not require participants to respond to questions if they report having never used cannabis.
bThis value pertains to participants who reported ever having used cannabis (n = 9).