The goal of this report is to further document the 2018 NSDUH sample experiences, including a comparison of actual sample yields to state and quarter targets, a comparison of achieved and expected design effects (DEFFs) and relative standard errors, and documentation of any issue encountered during sample implementation. The 2018 sample design is thoroughly documented in the 2018 NSDUH sample design report (Center for Behavioral Health Statistics and Quality, 2019a).
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