In addition, in the parent Spit for Science Survey, alcohol use behaviors were assessed for both the prevention program participants and their matched controls in the initial fall survey (“Baseline/Fall”) approximately a month before Week 1 of the programs, and in a follow-up survey in the spring semester approximately six months after the initial fall survey and 22 weeks from the beginning of the prevention programs (“Week 22/Spring”). Seventy-five percent of the prevention study participants completed the Week 22 follow-up. Alcohol use behaviors assessed in these surveys included typical number of days drinking per month (ordinal, recoded as pseudo-continuous), usual number of drinks per occasion (ordinal, recoded as pseudo-continuous), maximum drinks in 24 hours (MAX24) (fall: lifetime maximum; spring: maximum since beginning college), and DSM-V AUD symptoms (fall: lifetime symptoms; spring: symptoms since beginning college). An overview of the study timeline and measures is displayed in Figure 1.
