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Full-Text Articles in Public Health
Why Match In Individually And Cluster Randomized Trials?, Laura Balzer, Maya Petersen, Mark Van Der Laan
Why Match In Individually And Cluster Randomized Trials?, Laura Balzer, Maya Petersen, Mark Van Der Laan
Laura B. Balzer
The decision to match individuals or clusters in randomized trials is motivated by both practical and statistical concerns. Matching protects against chance imbalances in baseline covariate distributions and is thereby thought to improve study credibility. Matching is also implemented to increase study power. Analogue to Rose and van der Laan (2009), this article investigates the asymptotic efficiency of pair-matching individuals or clusters relative to not matching in randomized trials. We focus on estimating the average treatment effect. We use the efficient influence curve to understand the information provided by each design for estimation of the target causal parameter. Our approach …
Hiv Risk Perceptions And The Distribution Of Hiv Risk Among African, Caribbean And Other Black People: Mixed-Methods Results From The Blacch Study, Shamara M. Baidoobonso, Bauer Greta
Hiv Risk Perceptions And The Distribution Of Hiv Risk Among African, Caribbean And Other Black People: Mixed-Methods Results From The Blacch Study, Shamara M. Baidoobonso, Bauer Greta
Shamara M Baidoobonso, PhD
BACKGROUND: African, Caribbean and other Black people (ACBP) are a priority group for HIV prevention efforts in Canada. ACBP and service providers’ (SP) perceptions about HIV risk impact the uptake and delivery of prevention messages. These perceptions may not reflect actual risk among ACBP, so it is important to assess them and identify groups for which they may be valid. Emerging evidence from Sub-Saharan Africa shows that social determinants of health (SDOH) impact the distribution of HIV risk. However, SDOH are context-specific, and to date, virtually no research has explored their impact on HIV risk among ACBP in North America. …