| |
No-risk group (n=366) |
At-risk group (n=53) |
|
| P value |
| Alcohol† |
80.1% |
79.2% |
0.88 |
| Daily alcohol use† |
18.3% |
13.2% |
0.47 |
| Marijuana† |
79.2% |
79.2% |
0.76 |
| Hallucinogenic (acid/PCP/mushrooms) † |
23.8% |
17.0% |
0.37 |
| Cocaine/crack/freebase † |
39.1% |
47.2% |
0.28 |
| Heroin † |
12.6% |
7.5% |
0.47 |
| Heroin and cocaine mixture † |
1.4% |
1.9% |
0.6 |
| Solvent/glue † |
1.9% |
1.9% |
0.9 |
| Amphetamines (including ecstasy) † |
39.1% |
41.5% |
0.73 |
| Medication used for the buzz † |
21.3% |
20.8% |
0.97 |
| Injection of drugs † |
18.9% |
13.2% |
0.46 |
| Multiple drug use |
64.2% |
60.4% |
0.66 |
| Numbers of types of drugs used |
2.2 |
2.2 |
0.92 |
| Regular drug used (≥3 times per week) † |
67.8% |
66.0% |
0.58 |
| Problems related to substance used |
71.9% |
75.5% |
0.45 |
| Alcohol abuse-dependence ‡ |
33.6% |
32.1% |
0.87 |
| Drug abuse-dependence‡ |
63.7% |
71.7% |
0.18 |
