Titre : | Ignoring "downstream infection" in the evaluation of harm reduction interventions for injection drug users (2001) |
Titre traduit : | (La non-prise en compte des contaminations "secondaires" dans l'évaluation des interventions en matière de réduction des risques pour les usagers de drogues par voie intraveineuse) |
Auteurs : | H. A. POLLACK |
Type de document : | Article : Périodique |
Dans : | European Journal of Epidemiology (Vol.17, n°4, April 2001) |
Article en page(s) : | 391-395 |
Langues: | Anglais |
Discipline : | EPI (Epidémiologie / Epidemiology) |
Mots-clés : |
Thésaurus mots-clés INJECTION ; REDUCTION DES RISQUES ET DES DOMMAGES ; MODELE STATISTIQUE ; HEPATITE ; VIH ; EVALUATION ; EPIDEMIOLOGIE ; ENQUETEThésaurus géographique EUROPE |
Résumé : |
ENGLISH : Harm reduction interventions to reduce blood-borne disease incidence among injection drug users (IDUs). A common strategy to estimate the long-term impact of such interventions is to examine short-term incidence changes within a specific group of individuals exposed to the intervention. Such evaluations may overstate or understate long-term program effectiveness, depending upon the relationship between short-term and long-term incidence and prevalence. This short paper uses steady-state comparisons and a standard random-mixing model to scrutinize this evaluation approach. It shows that evaluations based upon short-term incidence changes can be significantly biased. The size and direction of the resulting bias depends upon a simple rule. For modest interventions, such analyses yield over-optimistic estimates of program effectiveness when steady-state disease prevalence exceeds 50% absent intervention. When steady-state prevalence is below 50%, such analyses display the opposite bias. (Review' s abstract) |
Note de contenu : | graph. |
Domaine : | Drogues illicites / Illicit drugs |
Refs biblio. : | 20 |
Affiliation : |
Univ. of Michigan School of Public Health, SPH II, 109 Observatory, Ann Arbor, MI 48109-2029 Etats-Unis. United States. |
Numéro Toxibase : | 1300474 |
Centre Emetteur : | 13 OFDT |
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