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6. What was their mean age?
7. What was the percentage of participants who obtained income from illegal sources at the beginning, then at the end of the study?
- 63% to 10%
- 82% to 16%
- 56% to 12%
- 40% to 5%
8. 147 participants had...
- reduced their cocaine use
- doubled their cocaine use
9. Cocaine use had a positive relationship with what factor?
- Contact with the drug scene
- If their father was present in their life
- Poverty
10. The number of non users had...
- Not changed
- Trebled
- Doubled
11. Of 261 participants, 99 had...
- greatly increased cocaine use at the end
- the same pattern of cocaine use at the end as at the start
- greatly reduced cocaine use at the end
12. How many times were the participants interviewed during the study?
13. Roughly how much time was between each urine test
- 2 months
- 3 months
- 2 weeks
- 6 days
14. What was one of the behavioural rules?
- Do not drink any alcohol
- Do not sell the prescribed drugs
- Take daily urine tests
15. 15 participants had...
- doubled their cocaine usage
- started using cocaine or increased usage
- stopped using cocaine altogether
16. By the end of the study, the number of addicts using cocaine on a daily basis had dropped by more than ...
17. Factor most associated with cocaine use was ...
- alcohol intake
- contact with the drug scene
- poverty
18. Addicts had to conform to behavioural rules in order for heroin to be prescribed
19. The addicts became more truthful about their cocaine use over the course of the study
20. Did participants continue to live and work in their natural environment during the study?