The incident for which the student was mandated was coded as “serious” (coded 1) if the referral was made by EMS/hospital (15.3%) or law enforcement personnel (2.3%) and non-serious (coded 0) if the student was referred by a residence hall advisor (83.4%). Gender was coded 1 for men and 0 for women. First-year students were coded 1 and all others were coded 0. Other drug use (cigarette, marijuana, and other substances) at baseline was coded 1 for those with any use of any substance and 0 for those without any use in the past month. Existing studies have found that students provide valid self-report drug use data (e.g., Johnston, O'Malley, Bachman, & Schulenberg, 2007).
