Table 2.
Socio-demographic information, diagnostic characteristics and prescan data for Experiment 2 (n = 20)
| Characteristic | Mean (SD) or % |
|---|---|
| Age (years) | 35.35 (8.13) |
| Education (years) | 13.60 (3.31) |
| Employed | 85% |
| Handedness (left/ambidextrous/right) | 5%/0%/95% |
| Methadone program | 95% |
| mg/d | 39.47 (30.00) |
| Heroin | |
| Years of use | 13.20 (6.29) |
| Age of first useb | 20.39 (4.30) |
| Main route of administration | |
| Intravenous injection | 55% |
| Inhalation (smoked) | 35% |
| Insufflation (snorted) | 10% |
| Cocaine | |
| Years of use | 15.25 (5.74) |
| Age of first useb | 18.83 (6.86) |
| Main route of administration | |
| Intravenous injection | 35% |
| Inhalation (smoked) | 10% |
| Insufflation (snorted) | 55% |
| Prescan drug-positivec | |
| Methadone | 90% |
| Morphine/opiates | 65% |
| THC | 55% |
| Benzodiazepines | 20% |
| Cocaine | 20% |
| Barbiturates | 0% |
| Amphetamine | 0% |
| Methamphetamine | 0% |
| Training imagery questionnairesa | % participants with >50% of maximum score |
| VVIQ | 90% |
| VMIQ | 90% |
| TVIC | 95% |
| IIES: Positive emotional states | 90% |
| IIES: Negative emotional states | 90% |
aVVIQ, Vividness of Visual Imagery Questionnaire; VMIQ, Vividness of Movements Imagery Questionnaire; TVIC, Test of Visual Imagery Control; IIES; Imagery Induction of Emotional States (adapted version).
bTwo missing data.
cOne missing data.