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Prevalence of self-reported SC use in cannabis-smoking research volunteers
| Reported use from 4/2012–9/2015 | |||||||
|---|---|---|---|---|---|---|---|
| 4/12–9/12 | 10/12–3/13 | 4/13–9/13 | 10/13–3/14 | 4/14–9/14 | 10/14–3/15 | 4/15–9/15 | |
| No use | 68.0 | 70.9 | 65.2 | 65.0 | 68.9 | 67.1 | 70.6 |
| Use | 32.0 | 29.1 | 34.8 | 35.0 | 31.1 | 32.9 | 29.4 |
Self-reported history of SC use represented as percent of group interviewed according to the 6-month periods from April 2012 through September 2015
