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. Author manuscript; available in PMC: 2020 Aug 1.
Published in final edited form as: J Adolesc Health. 2019 Aug;65(2):210–215. doi: 10.1016/j.jadohealth.2019.03.026

Figure 1. Trends in the Prevalence of Heroin and Injection Drug Use Among 9th-12th Graders, 1999–2017, by Urban Center.

Figure 1.

Trends in lifetime heroin and IDU follow one another over time in all districts, suggesting there is overlap in their use.