The study was based on surveys of over 138,000 adults across the country. The study defined excessive drinking as any of the following within the prior 30 days:
- binge drinking—i.e., having at least five drinks (for men) or four drinks (for women) on the same occasion at least once;
- heavy drinking—i.e., having at least 15 drinks per week (for men) or 8 drinks per week (for women);
- any drinking by respondents aged 18 to 20, if not included in another drinking category; or
- any alcohol consumption by pregnant women.
The study notes that “even among those who reported binge drinking 10 or more times in the past month, more than two-thirds did not meet diagnostic criteria for alcohol dependence according to their responses to the survey.”
For more information, read the full report.