Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Substance dependence data for control, alcohol dependent and polydrug dependent participant groups. Data exclude nicotine dependence
| Control | Alcohol | Polydrug | Total | ||
| Alcohol dependence | No | 57 | 0 | 23 | 80 |
| Yes | 0 | 27 | 36 | 63 | |
| Cocaine dependence | No | 57 | 27 | 14 | 98 |
| Yes | 0 | 0 | 45 | 45 | |
| Opioid dependence | No | 57 | 27 | 20 | 104 |
| Yes | 0 | 0 | 39 | 39 | |
| Length of abstinence (months) | Alcohol | Polydrug | Polydrug (outlier removed) | ||
| Mean (SD) | 15.46 (17.76) | 20.86 (43.98) | 15.63 (18.10) | ||
| Median | 8.0 | 9.0 | 8.5 | ||
| Range | 1.0–79.0 | 0.5–324.0 | 0.5–102.0 | ||
