From a Centers for Disease Control press release:
More than 38 million U.S. adults binge drink an average of four times a month and the most drinks they consume on average is eight according to a new Vital Signs report form the Centers for Disease Control and Prevention. While binge drinking is more common among young adults ages 18–34, of those age 65 and older who report binge drinking, they do so more often – an average of five to six times a month.
Binge drinking is more common among those with household incomes of $75,000 or more, but the largest number of drinks consumed per occasion is significantly higher among binge drinkers with household incomes of less than $25,000 – an average of eight to nine drinks, the report said.
For more, click here: http://www.cdc.gov/media/releases/2012/p0110_binge_drinking.html