Estimating the prevalence of drug injection using a multiplier method based on a register of new HIV diagnoses


This scientific article was one of the 2011 EMCDDA scientific award winners, which celebrates scientific writing and distinguishes high-quality research in the field of illicit drugs.


This abstract is provided here as a convenience only. Check the publisher's website (if available) for the definitive version.

Knowledge of prevalence of illegal drug injection can aid the design and evaluation of services for problem drug users. In this study, prevalence of recent injectors in Spain was estimated with a multiplier method using the number of injectors in a population register of new HIV diagnoses, HIV incidence among injectors from cohort studies and HIV prevalence among injectors in a drug treatment register. Prevalence in 2008 was 38.8 (95 % CI 23.8–53.8) per 100 000 population, a 2.8 times reduction compared with 2001. This method permits estimation of both prevalence and trends of drug injection. It is sustainable and routinely applicable in many countries.

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14 June 2010
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European Journal of Public Health
Volume 21, Issue 5, October 2011, Pages 646–648
Gregorio Barrio Anta, Jesús Oliva, María J. Bravo, Salvador De Mateo, Antonia Domingo-Salvany for the Itinere Working Group
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