We wish to thank the authors ofTheAggie editorial (Binge Drinking Drops,Apr.28) for closing with the key point that “a decline in high-risk drinking is good for everyone” and that “by informing students of their legal responsibilities and fostering positive relations between college students and Davis residents,the (UC Davis Safe Party) program contributed to the wellbeing of students and the community.” While we appreciate that broader view,we do have a couple of points of disagreement with the editorial.
Regarding the methodological issues raised,we explained to the Aggie reporter that the first survey intentionally used a larger sample so researchers could ensure they had data from enough students in each party environment to determine which to target.While as in the vast majority of surveys,participation was voluntary; a random sampling method was used.Confidentiality of responses,weighting to adjust for potential bias and collecting data over time also helped to improve the reliability and validity of the data.
As to the greater selectivity at UC Davis,data from the UC Office of the President show that almost all participating UC campuses (all except Merced and San Francisco) had similar trends in increasing selectivity over the research period.For example,between2003and2007,the average GPA increased slightly for all but two of the participating UC campuses.
Finally,TheAggie chose to ignore evidence demonstrating that combined data from the intervention vs.comparison campuses (eightUC campuses andsixCSU campuses) showed a statistically significant difference in intoxication rates.Instead,they chose to speculate on alternative hypotheses,without providing empirical evidence to support their claims.While we are happy to consider alternative hypotheses,we would appreciate that they be based on accurate,realistic information.
UC Davis and the surrounding community have been fortunate to be part of a statewide research project that was based on evidence of prior success with environmental management strategies in communities.We will continue to use evidence-based strategies and community partnerships to improve the health and safety of our students and the Davis community.
Michelle Johnston
Health Promotion Supervisor, Student Health Services
