Surveillance of diversion and nonmedical use of extended-release prescription amphetamine and oral methylphenidate in the United States.

J Addict Dis · 2013 · PMC3630455 · PMID 23480245

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mildly significantno p-value reported

In the Drug Diversion study, the estimated population trend for extended-release amphetamine shows a mildly significant increase over time, but when taking product availability into account (see URDD rate), no meaningful trends are apparent.

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