Table 1 Demographic and Drug-Use Histories for the Cannabis Group (n=14) and Control Participants (n=10)
Cannabis group | Control group | |||
|---|---|---|---|---|
(n =14), | (n =10), | |||
Variable | mean (SD) | mean (SD) | Value a | p a |
Age (years) | 20.8 (2.5) | 21.4 (2.8) | F=0.32 | 0.58 |
Educational level (years) | 14.3 (1.3) | 15.1 (1.5) | F=2.04 | 0.17 |
WAIS (picture completion) | 12.2 (2.4) | 13.1 (3.5) | F=0.54 | 0.47 |
WAIS (digit symbol) | 10.9 (2.4) | 11.7 (2.5) | F=0.97 | 0.34 |
WAIS (similarities) | 11.2 (2.8) | 12.9 (2.6) | F=2.23 | 0.15 |
WAIS (digit span) | 11.9 (3.1) | 12.4 (1.9) | F=0.18 | 0.67 |
Averge cannabis (joints) per week (past month) | 9.7 (6.0) | 0 (0) | ||
Total cannabis use past month | 37.1 (18.5) | 0 (0) | ||
Total cannabis use past 6 months | 224.3 (120.8) | 0 (0) | ||
Age of first cannabis use | 15.3 (1.5) | 0 (0) | ||
Total years of cannabis use | 5.6 (3.5) | 0 (0) | ||
Average alcoholic drinks per week (past month) | 5.6 (4.0) | 1.1 (1.5) | F=11.4 | 0.003 |
Average number of cigarettes per day (past month) | 8.4 (9.2) | 2.0 (6.3) | F=3.6 | 0.07 |
n (%) | n (%) | |||
Diagnosis of cannabis abuse | 5 (38%) | 0 (0%) | ||
Diagnosis of cannabis dependence | 3 (21%) | 0 (0%) | ||
Handedness | ||||
Right | 12 (92%) | 10 (100%) | ||
Left | 2 (8%) | 0 (0%) | ||
Gender | ||||
Male | 11 (79%) | 6 (60%) | ||
Female | 3 (21%) | 4 (40%) | ||
