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Most common drug combinations used before experience of adverse effect
| Alcohol % | Marijuana % | Ecstasy % | Cocaine % | LSD % | Ketamine % | |
|---|---|---|---|---|---|---|
| Alcohol | -- | 16.3 | 7.8 | 11.3 | 2.5 | 2.8 |
| Marijuana | 26.7 | -- | 5.2 | 9.3 | 6.4 | 2.9 |
| Ecstasy/MDMA/Molly | 25.6 | 10.5 | -- | 5.8 | 19.5 | 7.0 |
| Cocaine | 36.4 | 18.2 | 5.7 | -- | 5.7 | 6.8 |
| LSD | 15.2 | 23.9 | 10.5 | 10.9 | -- | 2.2 |
| Ketamine | 25.0 | 15.6 | 18.8 | 18.8 | 3.1 | -- |
