title: Adolescents' Use of Medical Marijuana: A Secondary Analysis of Monitoring the Future Data.
abstract: OBJECTIVE
  To examine adolescents' annual use of medical marijuana and determine if legal medical marijuana users are at lower risk for frequent marijuana use and other substance use when compared to adolescents who use diverted medical marijuana or from an illicit source.
  
  
  METHODS
  Public access Monitoring the Future data were used for this secondary analysis. The total weighted sample size was 4394 12th graders.
  
  
  RESULTS
  Users of medical marijuana and diverted medical marijuana had notable odds of using daily, using prescription drugs, and using illicit drugs among other substance use behaviors. Medical marijuana users had much higher odds of using medical marijuana because of being "hooked" when compared to diverted medical users and illicit users.
  
  
  CONCLUSIONS
  This study is the first to provide nationally representative data on three groups of adolescent marijuana users. Although most adolescents use illicit sources, more adolescents appear to be using diverted medical marijuana, than using medical marijuana legally.
authors.affiliation: Health Behavior and Biological Sciences (HBBS), School of Nursing, University of Michigan, Ann Arbor, Michigan; Addiction Research Center, Department of Psychiatry, University of Michigan, Ann Arbor, Michigan; Institute for Research on Women & Gender, University of Michigan, Ann Arbor, Michigan. Electronic address: caroboyd@umich.edu.
authors.forename: Carol J
authors.initials: CJ
authors.lastname: Boyd
authors.affiliation: Institute for Research on Women & Gender, University of Michigan, Ann Arbor, Michigan.
authors.forename: Philip T
authors.initials: PT
authors.lastname: Veliz
authors.affiliation: Institute for Research on Women & Gender, University of Michigan, Ann Arbor, Michigan.
authors.forename: Sean Esteban
authors.initials: SE
authors.lastname: McCabe
mesh_terms: D000293:Adolescent; D000294:Adolescent Behavior / Q000523:psychology*; D005260:Female; D006801:Humans; D013287:Illicit Drugs; D008297:Male; D002189:Marijuana Abuse / Q000453:epidemiology; D008385:Marijuana Smoking / Q000453:epidemiology* / Q000523:psychology; D064086:Medical Marijuana / Q000008:administration & dosage*; D055553:Prescription Drugs / Q000008:administration & dosage*; D012309:Risk-Taking; D019966:Substance-Related Disorders / Q000453:epidemiology* / Q000523:psychology; D011795:Surveys and Questionnaires; D014481:United States
chemical_list: D013287:Illicit Drugs; D064086:Medical Marijuana; D055553:Prescription Drugs
keywords: Adolescents; Medical marijuana; Monitoring the future; Substance abuse