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Health Care Management Science

, Volume 10, Issue 2, pp 151–162 | Cite as

Dynamic compartmental model of trends in Australian drug use

  • Jonathan P. CaulkinsEmail author
  • Paul Dietze
  • Alison Ritter
Article

Abstract

A five-state compartment model of trends in illicit drug use in Australia is parameterized using data from multiple sources. The model reproduces historical prevalence and supports what-if analyses under the assumption that past trajectories of drug escalation and desistance persist. For fixed initiation, the system has a unique stable equilibrium. The chief qualitative finding is that even though some users escalate rapidly, regular injection drug use still adjusts to changes in incidence with considerable inertia and delay. This has important policy implications, e.g., concerning the timing of reductions in drug-related social cost generated by interventions that reduce the social cost per injection user versus those that cut drug initiation.

Keywords

Dynamic modeling Drugs Epidemic Injection drug use Compartmental models 

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Copyright information

© Springer Science+Business Media, LLC 2007

Authors and Affiliations

  • Jonathan P. Caulkins
    • 1
    • 2
    Email author
  • Paul Dietze
    • 3
    • 4
  • Alison Ritter
    • 3
    • 5
  1. 1.Carnegie Mellon University-Qatar CampusDohaQatar
  2. 2.H. John Heinz III School of Public Policy and ManagementCarnegie Mellon UniversityPittsburghUSA
  3. 3.Turning Point Alcohol and Drug CentreMelbourneAustralia
  4. 4.Monash Institute of Health Services ResearchMelbourneAustralia
  5. 5.National Drug and Alcohol Research CentreUniversity of New South WalesSydneyAustralia

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