Overdose rescues by trained and untrained participants and change in opioid use among substance-using participants in overdose education and naloxone distribution programs: a retrospective cohort study.

BMC Public Health · 2014 · PMC4004504 · PMID 24684801

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an overall trendno p-value reported

Nonetheless, we did not find an overall trend toward increased heroin use, and the largest group actually decreased heroin use.

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