We analyzed adult samples (aged ≥18 years) of public-use datasets from the 2005–2013 NSDUHs to characterize national trends in CUD by race/ethnicity. We used the 2005–2013 NSDUH datasets (n=36,965–39,133/year), as they used similar designs to allow analysis of the same variables to study CUD (SAMHSA, 2014). NSDUH is the primary national survey designed to provide ongoing estimates of drug use and drug use disorders in the United States (SAMHSA, 2006, 2014). It used multistage area probability sampling methods to select a representative sample of the civilian, noninstitutionalized population aged ≥12 years. The sample included residents of households (including shelters, rooming houses, and group homes) from the 50 states and civilians residing on military bases.
