Table 1. Association Between Type of Cannabis and Demographic, Substance Abuse, and Mental Health Outcomes in 1087 Participants Who Reported Recent Cannabis Use.
| Characteristic | Cannabis use, %a | P valueb | |
|---|---|---|---|
| High potency (n = 141) | Lower potency (n = 946) | ||
| Regular cannabis use | 56.8 | 17.6 | ≤.001 |
| Cannabis use problems | 10.1 | 0.8 | ≤.001 |
| Use of other illicit drugs | 82.9 | 66.5 | ≤.001 |
| Tobacco dependence | 37.0 | 15.1 | ≤.001 |
| Alcohol use disorder | 15.1 | 10.0 | ≤.001 |
| Major depression (moderate or severe symptoms) | 11.7 | 9.7 | ≤.001 |
| Generalized anxiety disorder | 19.1 | 11.6 | ≤.001 |
| Psychotic-like experiences | 12.4 | 7.1 | ≤.001 |
| Male sex | 71.6 | 43.4 | ≤.001 |
| Low maternal educational level | 19.2 | 13.1 | ≤.001 |
| Lower parental occupational class | 32.2 | 29.2 | ≤.001 |
| Black or minority ethnic group | 5.3 | 5.3 | .94 |
| Age at onset of cannabis use, mean (95% CI), y | 14.7 (14.3-15.1) | 16.9 (16.8-17.2) | NA |
| MFQ score at 13 y, mean (95% CI) | 5.6 (4.65-6.49) | 5.6 (5.26-5.95) | NA |
| No. PEs at 12 y, mean (95% CI) | 0.33 (0.18-0.48) | 0.20 (0.16-0.24) | NA |
Abbreviations: MFQ, Mood and Feelings Questionnaire; NA, not applicable; PEs, psychotic experiences.
a
All numbers estimated from imputed proportions.
b
Determined by χ2 test.