Table 4.
Prevalence of hallucinogen use disorders among past-year hallucinogen users aged 12–17 years: by MDMA use status (N = 1,585)
| Prevalence % (95% confidence interval) | Overall | A: MDMA users | B: Other hallucinogen users | χ2 test1 |
|---|---|---|---|---|
| Sample size | 1,585 | 646 | 939 | |
| Dependence | 6.7 (5.19–8.69) | 11.1 (8.24–14.81) | 3.5 (2.22–5.43) | A > B |
| Abuse | 10.3 (8.53–12.48) | 11.7 (8.77–15.50) | 9.3 (6.89–12.47) | NS |
| Subthreshold dependence | 13.2 (11.17–15.56) | 15.7 (12.43–19.65) | 11.4 (9.09–14.11) | NS |
| Use without DSM-IV criterion symptom | 69.7 (66.74–72.55) | 61.5 (56.52–66.18) | 75.9 (71.96–79.34) | A < B |
Sample sizes are unweighted numbers; proportions are weighted figures.
1
χ2 (df) test = 29.14 (3), p < 0.001.
NS: p > 0.05.