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. Author manuscript; available in PMC: 2016 Jul 1.
Published in final edited form as: Drug Alcohol Depend. 2015 Apr 9;152:224–229. doi: 10.1016/j.drugalcdep.2015.03.034

Figure 1.

Figure 1

Meta-analysis summary estimates: Age-specific risk of starting nonmedical use of prescription stimulants Figure 1. Age-specific incidence rate estimatesa (with standard error bars) for newly incident nonmedical use of prescription stimulants. Data are from the US National Surveys on Drug Use and Health 2004–2012 (n=240,160). a Age-specific summary estimates based on meta-analysis of estimates based on weighted proportions; each year provides an independent sample.