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. 2018 Nov 28;13(11):e0206100. doi: 10.1371/journal.pone.0206100

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© 2018 Piper et al

This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

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Fig 1 — (A). Regional analysis of these drugs in 2016. Lixdex: lisdexamfetamine. ^tp ≤ .001 versus the US Territories; ^wp < .05 versus the western states (B). Scatterplot depicting moderate association (R² = 0.40) between percent of the state comprised of Hispanic citizens according to the 2015 US Census and population corrected use of methylphenidate (C).