The factor structure of a dichotomously scored rutgers alcohol problem index

Objective: Heavy college-student alcohol use and its resulting negative consequences represent a public-health problem on American college campuses. The Rutgers Alcohol Problem Index (RAPT) is a commonly used measure of alcohol problems among college students, but the psychometric properties of this measure never have been comprehensively assessed with the college-student population. The purpose of this research was to conduct reliability and validity analyses, particularly exploratory and confirmatory factor analysis, on a dichotomously scored version of the measure. Method: Data were collected on 4,686 undergraduate students at a large, public university in the Northwest region of the United States and 438 students at a large, pub- lic university in the Northeast. Results: Exploratory factor analysis suggested that a three-factor model provided the best fit to the data. This finding was replicated via confirmatory factor analyses in two separate samples. The three factors were labeled Abuse/Dependence Symptoms, Personal Consequences, and Social Consequences. Each individual factor demonstrated adequate internal consistency and convergent validity. Conclusion: The results of this study suggest that a dichotomously scored RAPT consists of three subfactors that are reliable and valid in identifying alcohol-related problems among college students.