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Published on: March 23, 2022
Problematic heroin use incidence trends in Spain.
Albert Sánchez-Niubò1, Josep Fortiana, Gregorio Barrio
1Institut Municipal d'Investigació Mèdica, Barcelona, Spain.
The annual incidence of heroin use in Spain peaked in 1980 and has significantly declined since then, particularly for injecting heroin. This study highlights a new method for estimating drug use trends.
Area of Science:
- Epidemiology
- Public Health
- Substance Abuse Research
Background:
- Estimating the incidence of heroin use is crucial for public health interventions.
- Previous methods may not fully account for treatment-seeking delays.
- Understanding trends in heroin use informs prevention and treatment strategies.
Purpose of the Study:
- To estimate the annual incidence of problematic heroin use in Spain.
- To analyze trends in heroin use from 1971 to 2005.
- To assess the delay between initiating heroin use and seeking treatment.
Main Methods:
- Utilized data from the Spanish Drug Observatory Register (1971-2005).
- Employed a log-linear model to correct for missing observations.
- Calculated the time delay between first heroin use and first treatment presentation.
Main Results:
- Heroin use incidence peaked in 1980 at 190 per 100,000 (aged 15-44) and decreased to 8 per 100,000 by 2005.
- Incidence was five times higher in men.
- Heroin smoking incidence has remained higher than injecting since 1985.
Conclusions:
- A novel method effectively estimates heroin incidence using treatment data.
- Heroin use incidence, especially injecting, has declined substantially since 1980.
- Current incidence levels are lower than in the early 1970s.
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