During the last decade, the number of emergency room visits for college students abusing prescription stimulants has more than tripled (Substance Abuse and Mental Health Services Administration, 2013). To understand what might be driving this increase in Illicit Use of Prescription Stimulants (IUPS), researchers have used the Theory of Triadic Influence (i.e., TTI; Bavarian, Flay, Ketcham, & Smit, 2013b). As Figure 1 shows, three areas of influence (i.e., intrapersonal, social, and environmental factors) might promote the abuse of prescription stimulants through four stages of association (i.e., ultimate underlying causes, distal predisposing influences, proximal immediate predictors, and immediate precursors). Today’s STASH reviews results from a recent study (Bavarian, Flay, Ketcham, & Smit, 2013b) examining illicit use of prescription through this comprehensive framework.
Figure 1. Model of the Theory of Triadic Influence as applied to illicit use of prescription drugs, with examples of potential predictors
Note. Click to open full-size image in new window.
- Participants were 520 undergraduate students recruited
from 20 randomly selected classrooms at a Pacific Northwest University during
the winter 2012 academic term.
- The survey response rate was 96%
- The sample was fairly evenly distributed between men and women and was mostly non-Hispanic white, and upperclassmen.
- Participants completed a paper-based survey about IUPS (i.e., the BEACH-Q; Bavarian, Flay, Ketcham, & Smit, 2013a). IUPS was defined as using prescription stimulants without a prescription for nonmedical purposes or in excess of what was prescribed.
- About 26% of students reported ever using IUPS during college. Of these, 70% reported that they began IUPS during college.
- Table 1 shows the adjusted odds ratios for
significant variables from the final logistic regression models predicting IUPS
use for each of the three areas of influence organized by the four levels of
- As Table 1 shows, protective factors included Asian/Pacific Islander ancestry; living on-campus; exposure to prescription drug print media; and perceived ability to avoid IUPS. Also, unexpectedly, students who felt that faculty would approve of IUPS were less likely to engage in this practice.
- Risk factors included having lower grades (i.e., having a GPA of 2.0 compared with a 4.0); lifetime ADHD diagnosis; being a varsity athlete; perceived family approval of IUPS; behavioral norms of friends; greater prescription stimulant knowledge; understanding the cost/benefits of IUPS; and IUPS intentions.
Table 1. Significant adjusted odd ratios from 3 nested logistic regression models including the four levels of association (modified from Bavarian, Flay, Ketcham, & Smith, 2013b).
- The data from this survey, like most data collected via self-report, is subject to potential recall bias and underreporting harmful behavior.
- The cross-sectional design does not allow the study of how IUPS develops over time, though these associations suggest potential pathways.
- Aspects of this study (e.g., single-stage cluster sampling by class, use of one university) limit the generalizability of its findings; patterns might be different with other samples and within other environments.
This study is a promising step in understanding college students’ IUPS. It is one of the first to use a comprehensive framework to understand relationships among the factors that might influence on IUPS. This research also provides prevention specialists with areas to target at the intrapersonal, interpersonal and environmental levels, such as skill building to help students avoid IUPS and social norms campaigns that build awareness about the disapproval of family and faculty, as well as correcting campus misperceptions of misuse among students. However, future studies that work with larger, more representative samples and longitudinal study designs will best serve the prevention and treatment field.
Bavarian, N., Flay, B.R., Ketcham, P.L., & Smit, E. (2013a). Development and psychometricproperties of a theory-guided prescription stimulant misuse questionnaire forcollege students. Substance Use and Misuse, 48, 457-469.
Bavarian, N., Flay, B.R., Ketcham, P.L., & Smit, E. (2013b). Illicit use of prescription stimulants in a college student sample: A theory-guided analysis. Drug Alcohol Depend. Online First. doi: 10.1016/j.drugalcdep.2013.04.024
Substance Abuse and Mental Health Services Administration. (2013). Emergency department visits involving attention deficit/hyperactivity disorderstimulant mediations. Retrieved July 7, 2013, from http://www.samhsa.gov/data/2k13/DAWN073/sr073-ADD-ADHD-medications.htm
Teter, C.J., McCabe, S.E., LaGrange, K., Cranford, J.A., & Boyd, C.J. (2006). Illicit use ofspecific prescription stimulants among college students: prevalence, motives,and routes of administration. Pharmacotherapy, 26, 1501-1510.