About 22 percent of American Indians/Alaska Natives (AI/ANs) reside on reservations or other trust lands, which contain unique governments, histories, traditions,
communities, languages, and behavioral health challenges. In general, there is a lack of nationally representative data on the substance use and mental health of AI/ANs residing on and off tribal lands. This report provides methodological information on how to obtain estimates of behavioral health outcomes for populations living on and off tribal lands and provides some initial estimates.
