| Frequency | % |
Age at starting cannabis use: 10 - 19 years 20 - 29 years 30 years or more |
49 44 03 |
51 45.8 03.1 |
Duration of using cannabis Less than 5 years 5 - 10 years More than 10 years |
86 07 03 |
89.6% 7.3 3.1 |
Cannabis use preceding psychiatric symptoms: Yes No |
17 79 |
17.7 82.3 |
Increasing amount of smoked cannabis Yes No |
34 62 |
35.4 64.6 |
Effect of cannabis on daily activities Yes No |
55 41 |
57.3 42.7 |
Desire to continue using cannabis Yes No |
15 81 |
15.6 84.4 |
History of withdrawal symptoms Yes No |
40 56 |
41.7 58.3 |
Trials to quit: Never Once 2-3 trials More than 3 trials |
7 55 29 5 |
7.3 57.3 30.2 5.2 |
Barriers to quit Boredom Stress and anxiety Habituation Other psychological symptoms |
37 32 18 9 |
38.5 33.3 18.8 9.4 |