Résumé :
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[BDSP. Notice produite par INIST-CNRS 0BR0xLK9. Diffusion soumise à autorisation]. Study objective : To estimate the prevalence of injecting drug use (IDU) in three cities in England and to measure the coverage of key public health indicators. Design : Capture-recapture techniques with covariate effects. Setting : Liverpool, Brighton, and 12 London boroughs, 2000/01. Participants : IDU collated and matched across five data sources-community recruited survey, specialist drug treatment, arrest referral, syringe exchange, and accident and emergency-896 in Brighton, 1224 in Liverpool, and 6111 in London. Main results : It is estimated that in 2000/01 the number and prevalence of IDU aged 15-44 was 2300 (95% Cl 1500 to 3700) and 2.0% (95% Cl% 1.3% to 3.2%) in Brighton ; 2900 (95% Cl 2500 to 5000) and 1.5% (95% Cl 1.3% to 2.6%) in Liverpool ; 16 700 (95% Cl 13 800 to 21 600) and 1.2% (95% Cl 1.0% to 1.6%) in 12 London boroughs ; with a prevalence of 1.7% (95% Cl 1.2% to 3.3%) in inner London. It is estimated that : less than one in four IDU are in treatment in the three areas ; syringe exchange programmes covered about 25% of injections in Brighton and Liverpool and 20% in London ; and that the annual opioid mortality rate among IDU was 2% in Brighton compared with less than 1% in Liverpool and London. Conclusions : Credible estimates of the prevalence of injecting drug use (and key public health indicators) can be determined using covariate capture-recapture techniques. These suggest that : targets to double the number in treatment are possible : syringe distribution should be increased ; and further attention, especially in Brighton, given to reducing overdose mortality.
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