Research Article
Assessing Topographical Orientation Skills in Cannabis Users
Table 1
Participants’ demographic information and drug use.
| | Measure | Users | Naives | -test |
| | Age (years), mean (SD) | 25.07 (3.43) | 26.21 (3.37) | (n.s.) | | Education (years), mean (SD) | 13.47 (2.03) | 14.84 (2.26) | (n.s.) | | IQ, mean (SD) | 112.98 (3.45) | 114.89 (2.78) | (n.s.) | | BDI*, mean (SD) | 6.53 (5.72) | 3 (2.62) | () |
| | Cannabis use | | | |
| | Lifetime exposure (no. of joints), mean (SD) | 6119 (6346.83), (range: 965–23040) | — | | | Use during previous 7 days (joints), mean (SD) | 17.93 (18.44) | — | | | Use during previous 30 days (joints), mean (SD) | 73.47 (57.89) | — | | | Cannabis length of use (years), mean (SD) | 7.13 (3.33) | — | | | Average weekly dose (joints), mean (SD) | 16.75 (11.54) | — | |
| | Tobacco smoking (no. of cigarettes/week), mean (SD) | 75.26 (82.07) | 41.41 (50.33) | (n.s.) | | Alcohol units** (no. of units/week), mean (SD) | 8.13 (8.65) | 4.89 (4.59) | (n.s.) |
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*Beck Depression Inventory (BDI).
**A unit was constituted by a glass of wine, a single measure of spirit or a small beer (250 mL).
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