Correction to: Subst Abuse Treat Prev Policy (2019) 14: 29

https://doi.org/10.1186/s13011-019-0213-6

Following publication of the original article [1], we have been notified that the following changes should occur in the content of the article. The details are below.

  1. 1.

    Table 1 and Table 2: the last section on OAT retention pertaining to treatment retention was only conducted on a subcohort of the population and therefore the numbers are not accurate and should be removed.

  2. 2.

    The article Outcome section on OAT retention should be removed because retention was not used as covariate.