Epidemiologic Perspectives & Innovations - Latest articlesThe latest articles from Epidemiologic Perspectives & Innovations (ISSN 1742-5573) published by BioMed CentralShould adjustment for covariates be used in prevalence estimations- January 25, 2008 Background: Adjustment for covariates (also called auxiliary variables in survey sampling literature) is commonly applied in health surveys to reduce the variances of the prevalence estimators. In theory, adjusted prevalence estimators are more accurate when variance components are known. In practice, variance components needed to achieve the adjustment are unknown and their sample estimators are used instead. The uncertainty introduced by estimating variance components may overshadow the...http://www.epi-perspectives.com/content/5/1/2 Feasibility of an automated telephone survey to enable prospective monitoring of subjects whose confidentiality is paramount: a four-week cohort study- January 7, 2008 ObjectiveA goal in intimate partner violence (IPV) research is to identify victims when they are treated in a hospital Emergency Department (ED) and predict which patients will sustain abuse again after discharge, so interventions can be targeted. Following patients to determine those prognostic factors is difficult, however, especially to study IPV given the risk to be assaulted if their partner learns of their participation. We assessed the feasibility of an automated telephone survey and a...http://www.epi-perspectives.com/content/5/1/1 |