Table 6.
Summary of substance use in the main study.
| Main (N = 14) | |
|---|---|
| Any substance use over the study perioda | |
| Tobacco | |
| Number of participants who used substance | 13 |
| Number of episodes [mean (std)] | 90.1 (47.93) |
| Total number of episodes over study period | 1,171 |
| Alcohol | |
| Number of participants who used substance | 3 |
| Number of episodes [mean (std)] | 10.0 (3.46) |
| Total number of episodes over study period | 30 |
| Cannabinoids/marijuana | |
| Number of participants who used substance | 5 |
| Number of episodes [mean (std)] | 1.0 (0.00) |
| Total number of episodes over study period | 5 |
| Synthetic cannabinoids | |
| Number of participants who used substance | 0 |
| Number of episodes [mean (std)] | 0 (0) |
| Total number of episodes over study period | 0 |
| Cocaine | |
| Number of participants who used substance | 4 |
| Number of episodes [mean (std)] | 10.5 (13.72) |
| Total number of episodes over study period | 42 |
| Crack | |
| Number of participants who used substance | 11 |
| Number of episodes [mean (std)] | 12.7 (9.75) |
| Total number of episodes over study period | 140 |
| Amphetamines | |
| Number of participants who used substance | 0 |
| Number of episodes [mean (std)] | 0 (0) |
| Total number of episodes over study period | 0 |
| Methamphetamine | |
| Number of participants who used substance | 0 |
| Number of episodes [mean (std)] | 0 (0) |
| Total number of episodes over study period | 0 |
| Heroin | |
| Number of participants who used substance | 8 |
| Number of episodes [mean (std)] | 7.6 (9.69) |
| Total number of episodes over study period | 61 |
| Methadone | |
| Number of participants who used substance | 13 |
| Number of episodes [mean (std)] | 13.3 (3.33) |
| Total number of episodes over study period | 173 |
| Buprenorphine | |
| Number of participants who used substance | 1 |
| Number of episodes [mean (std)] | 13.0 (0) |
| Total number of episodes over study period | 13 |
| Other opioids | |
| Number of participants who used substance | 0 |
| Number of episodes [mean (std)] | 0 (0) |
| Total number of episodes over study period | 0 |
| Hallucinogens | |
| Number of participants who used substance | 0 |
| Number of episodes [mean (std)] | 0 (0) |
| Total number of episodes over study period | 0 |
| MDMA/ecstasy | |
| Number of participants who used substance | 0 |
| Number of episodes [mean (std)] | 0 (0) |
| Total number of episodes over study period | 0 |
| Barbiturates | |
| Number of participants who used substance | 0 |
| Number of episodes [mean (std)] | 0 (0) |
| Total number of episodes over study period | 0 |
| Benzodiazepines | |
| Number of participants who used substance | 4 |
| Number of episodes [mean (std)] | 7.8 (7.80) |
| Total number of episodes over study period | 31 |
| Tranquilizers | |
| Number of participants who used substance | 1 |
| Number of episodes [mean (std)] | 4.0 (0) |
| Total number of episodes over study period | 4 |
| Other sedatives and hypnotics | |
| Number of participants who used substance | 1 |
| Number of episodes [mean (std)] | 13.0 (0) |
| Total number of episodes over study period | 13 |
| Inhalants/solvents | |
| Number of participants who used substance | 0 |
| Number of episodes [mean (std)] | 0 (0) |
| Total number of episodes over study period | 0 |
| Other drug | |
| Number of participants who used substance | 5 |
| Number of episodes [mean (std)] | 20.0 (27.69) |
| Total number of episodes over study period | 100 |
a
Substance use as reported on the Timeline Followback (TUS) form.