Initial Diagnostic and Statistical Manual of Mental Disorders, Fourth Edition, diagnoses of substance abuse or dependence in 266 patients with first-episode psychosis
| Substance abuse diagnosis | No. (and %) of patients |
|---|---|
| No substance abuse | 138 (52) |
| Substance abuse | 128 (48) |
| Cannabis and alcohol | 37 (14) |
| Cannabis | 35 (13) |
| Alcohol | 32 (12) |
| Cannabis, alcohol and hallucinogens | 13 (5) |
| Cocaine | 5 (2) |
| Cannabis and hallucinogens | 3 (1) |
| Alcohol and hallucinogens | 2 (1) |
| Hallucinogens | 1 (0.5) |