Table 2.
Pattern of hallucinogen use among past-year hallucinogen users aged 12–17 years by MDMA use status (N = 1,585)
| Hallucinogen use status | Past-year MDMA users (n = 646) | Past-year users of other hallucinogens (n = 939) | χ2 or t-test p-value1 |
|---|---|---|---|
| Lifetime hallucinogen use, column % (SE) | |||
| MDMA | 100 | …….2 | |
| LSD | 30.3 (2.29) | 23.5 (1.95) | 0.029 |
| PCP | 18.5 (2.09) | 12.4 (1.59) | 0.023 |
| Peyote | 9.2 (1.35) | 4.6 (0.80) | 0.005 |
| Mescaline | 8.2 (1.76) | 3.6 (0.86) | 0.019 |
| Psilocybin | 45.9 (2.69) | 59.3 (1.93) | <0.001 |
|
| |||
| Number of different hallucinogens ever used,1 % (SE) | |||
| 1 | 40.4 (2.68) | 69.3 (2.30) | <0.001 |
| 2 | 29.9 (2.56) | 21.6 (2.06) | |
| 3 or more | 29.7 (2.14) | 9.1 (1.35) | |
|
| |||
| Number of different hallucinogens ever used,1 mean (SE) | 2.12 (0.05) | 1.05 (0.05) | <0.001 |
|
| |||
| Cumulative days of hallucinogen use in the past year, % (SE) | |||
| 1–11 | 62.0 (2.23) | 69.2 (2.00) | 0.048 |
| 12–51 | 21.3 (2.04) | 17.9 (1.67) | |
| 52 or more days | 16.7 (2.07) | 12.9 (1.44) | |
|
| |||
| Age of first hallucinogen use, mean (SE) | 14.7 (0.08) | 14.5 (0.08) | NS |
| Age of first MDMA use, mean (SE) | 15.1 (0.07) | 14.5 (0.20) | 0.005 |
| Age of first LSD use, mean (SE) | 14.7 (0.16) | 14.4 (0.18) | NS |
| Age of first PCP use, mean (SE) | 14.2 (0.21) | 14.3 (0.28) | NS |
Sample sizes are unweighted numbers; proportions are weighted figures.
1
χ2 tests for proportion and t tests for mean; NS: p > 0.05.
2
A small percentage (6.5%) of past-year users of other hallucinogens reported MDMA use prior to the past year but not in the past year (former MDMA use).