503,325
Participants
Start Date
January 31, 2006
Primary Completion Date
November 30, 2022
Study Completion Date
November 30, 2022
Moderate drinking
Drink up to 16 grams of alcohol daily or almost daily \[repeated assessment center visit\] or 8-16 grams of alcohol 4 or more times per week \[web-based mental health questionnaire\]
Quitting
No alcohol consumption
Social drinking
Drink up to 16 grams of alcohol 1-2 days per week or drink 1-3 times per month or only on special occasions \[repeated assessment center visit\], or drink 8-16 grams of alcohol 2-3 times per week or drink 4 times per month or less \[web-based mental health questionnaire\]
Heavy/binge drinking
Drink more than 16 grams of alcohol daily or almost daily or more than 40 grams of alcohol 1-2 days per week \[repeated assessment center visit\], or 24 grams of alcohol or more 4 or more times per week or 40 grams of alcohol or more 2-3 times per week \[web-based mental health questionnaire\]
Harvard School of Public Health (HSPH)
OTHER