Archival data from the NSDUH (formerly known as the National Household Survey on Drug Abuse, or NHSDA) is available beginning with the 1979 administration, conducted five years before the uniform MLDA act was passed.4 The transition to the uniform MLDA, which marks the beginning of a period during of increased efforts to reduce harms related to youth drinking, was completed in 1989. Subsequent to this, there have been numerous other policy efforts aimed at reducing youth alcohol consumption, including the widespread adoption of “zero-tolerance” laws that impose penalties on drivers under 21 with even low levels of blood-alcohol though these changes have varied widely by state. Other policy changes have varied widely by state, include stricter penalties for underage drinking or providing alcohol to minors, and laws aimed at preventing the use of false identification, and other measures.23 Estimates of binge drinking prevalence are available for three surveys before or during the transition to a uniform MLDA (1979, 1985, and 1988), and for each year after the transition was complete (1990–2006). There are a number of additional sources of data
