The data were obtained from the 1982 and 1990 National Drug and Alcoholism Treatment Unit Surveys. The units listed include alcohol-only and combined alcohol and other drug abuse treatment units. The percentages refer to the proportion of the unit types in the respective survey years.
Source: Weisner, C. Alcohol health services research: An evolving agenda. Alcohol Health & Research World 19(1):71–76, 1995.
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Updated: October 2000