Abstract Objective: The authors evaluated the efficacy of the 2002 college-based National Alcohol Screening Day (NASD) by determining: (1) the demographic and clinical characteristics of the participants that were screened and (2) the degree to which those scoring at hazardous drinking levels received clinical intervention or were referred for further assessment or treatment. Participants: Of 45,368 participants, 23,334 were screened and 14,598 received some form of clinical intervention, defined as advice or referral. Methods: The authors conducted nonparametric and univariate analyses to test for statistical differences in demographics, clinical-characteristics, and interventions-as a function of-screening mode. Results: Nearly 34% of those screened in person had an AUDIT score of 8 or higher, indicating harmful or hazardous drinking. Of these, only 10% had ever undergone alcohol treatment. More than 58% of those screened online scored 8 or higher, and of this group, fewer than 6% had ever undergone alcohol treatment. Conclusions: These data suggest that the in-person event and the online interactive program associated with NASD are serving markedly different populations, particularly with regard to clinical indicators. (Contains 6 tables and 1 figure.)