RT - Journal Article T1 - Prevalence of Nonmedical Use of Methylphenidate (Ritalin) in Residents JF - ijpcp YR - 2013 JO - ijpcp VO - 19 IS - 1 UR - http://ijpcp.iums.ac.ir/article-1-2006-en.html SP - 20 EP - 27 K1 - methylphenidate K1 - internship K1 - residency K1 - frequency of use K1 - attitude AB - Objectives: The aim of this study was to investigate the prevalence of nonmedical use of methylphenidate and the attitude toward this use in residents of clinical specialties of Tehran University of Medical Sciences. Methods: Two hundred and forty residents of clinical specialties (88 women) were selected using convenient sampling from Rasul Akram and Firouzgar Hospitals. The sample responded to a modified version of the Alcohol, Smoking and Substance Involvement Screening Test (ASSIST), as well as a questionnaire of attitude toward methylphenidate use. The data were analyzed by descriptive statistics and chi square test. Results: The lifetime, one year, and one month prevalence of methylphenidate use in the sample was 48%, 23%, and 6.6%, respectively. The prevalence was significantly higher in men than in women (2=13.16 p LA eng UL http://ijpcp.iums.ac.ir/article-1-2006-en.html M3 ER -