The aim of the current study was to test whether the web-based brief
alcohol intervention entitled “What Do You Drink” (WDYD) can sustain a
reduction in alcohol use among heavy drinking students after one, three,
and six months follow-up. A two-arm parallel group randomized controlled
trial applying an ecological momentary assessment (EMA) approach with 30
data time-points was conducted in the Netherlands, 2010-2011.