Table 3.
Prevalence of Substance Use Based on Responses to MINI and Timeline Follow-Back (N = 459)
| Substance | Past-year use (MINI) N (%) |
Past-month use Timeline follow-back N (%) |
|---|---|---|
| Alcohol | 103 (22.4)a | 88 (19.2)b |
| Drugs | 114 (24.8)c | 73 (15.9) |
| Specific drug categories | ||
| Illicit drugs | 108 (23.5) | |
| Cannabis | – | 58 (12.6) |
| Cocaine | – | 12 (2.6) |
| Heroin | – | 10 (2.2) |
| Hallucinogens | – | 1 (0.2) |
| Prescription drugs (non-medical use) | 21(4.6) | |
| Opioids | – | 5 (1.1) |
| Benzodiazepines | – | 3 (0.7) |
| Stimulants | – | 2 (0.4) |
aAlcohol use on MINI as defined by positive response to item I1: “In the past 12 months, have you had 3 or more alcoholic drinks, within a 3 h period, on 3 or more occasions?”
bUnhealthy past 30 days alcohol use, defined using National Institute on Alcohol Abuse and Alcoholism (NIAAA) guidelines of > 4 drinks/day or 14 drinks/week for men; > 3 drinks/day or 7 drinks/week for women
cDrug use on MINI as defined by a positive response to item J1: “In the past 12 months, did you take any of these drugs more than once, to get high, to feel elated, to get ‘a buzz’ or to change your mood?”