The Prevalence of Illicit Substance Use Among Students of Medical Sciences in Tehran: Results from Four Repeated Surveys from 2006 to 2009

Abstract

This study was conducted to evaluate the prevalence of illicit substance use among students of Tehran University of Medical Sciences (TUMS) in four repeated surveys from 2006 to 2009. All first- to fourth-year students of the university were included. The questionnaire was anonymous and self-administered and inquired directly about own personal use. We also inquired about use of substances in close friends present in the class to provide another estimated prevalence. Using self-report, the prevalence of “past-year use of any illicit substance” was 2.3% in 2006, 3.3% in 2007, 2.8% in 2008, and 1.1% in 2009. It did not show a significant linear trend, but showed a significant decline for the year 2009. Hashish, opioids, and amphetamine-type stimulants were the most common types of substances being used. The calculated estimated prevalence rates were higher than those based on self-reports. The results suggest the need for continuous monitoring and appropriate preventive planning.

KEYWORDS:

• epidemiology
• illicit drug use
• Iran
• medical students

Acknowledgments

The authors would like to thank the Deputy of Scholar and Cultural affairs of TUMS, the managers of educational affairs of the faculties, Dr. Zhaleh Gholami, Dr. Ahmadreza Sadeghi, Ms. Zahra Bayat, Ms. Salehi, Ms. Namdari, and Mr. Sowlat for their sincere cooperation during the study.

Funding

This study was financially supported by Tehran University of Medical Sciences through the contract number 132-3839. The funding source had no imposing role in the study design, or the collection, analysis, and interpretation of data.