How do I access NSDUH data at the level of specific ethnicities?

There are race/ethnicity variables in the recoded demographics section of the public-use file (PUF), but they do not include the detailed categories for Asian and Hispanic. For instance, all the detailed categories for Hispanics have been collapsed to "Hispanic" for the PUFs, which includes Cuban, Mexican, Puerto Rican, etc. You will need to access the restricted files in the Data Analysis System (DAS) for the detailed categories.