Winston E. Abara

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The purpose of this article is to introduce and describe a statistical model that researchers can use to evaluate underlying mechanisms of behavioral onset and other event occurrence outcomes. Specifically, the article develops a framework for estimating mediation effects with outcomes measured in discrete-time epochs by integrating the statistical(More)
OBJECTIVES We assessed spatial disparities in the distribution of Toxic Release Inventory (TRI) facilities in Charleston, SC. METHODS We used spatial methods and regression to assess burden disparities in the study area at the block and census-tract levels by race/ethnicity and socioeconomic status (SES). RESULTS Results revealed an inverse relationship(More)
Globally, men who have sex with men (MSM) are disproportionately burdened with syphilis. This review describes the published literature on trends in syphilis infections among MSM in the US and Western Europe from 1998, the period with the fewest syphilis infections in both geographical areas, onwards. We also describe disparities in syphilis trends among(More)
Though race and region are not by themselves risk factors for HIV infection, regional and racial disparities exist in the burden of HIV/AIDS in the US. Specifically, African Americans in the southern US appear to bear the brunt of this burden due to a complex set of upstream factors like structural and cultural influences that do not facilitate HIV/AIDS(More)
OBJECTIVE Internet sex-seeking is common among young men who have sex with men (MSM). However, research examining its association with risky sexual behaviour has produced mixed findings, possibly due to various operational definitions of internet sex-seeking which fail to account for its multi-dimensionality. This study purposed to: (1) examine if the way(More)
Winston Abara, MD, PhD, is a Health Policy Fellow, Satcher Health Leadership Institute, and Department of Community Health and Preventive Medicine, Morehouse School of Medicine, Atlanta, Georgia. Harry J. Heiman, MD, MPH, is the Director, Division of Health Policy, Satcher Health Leadership Institute, and an Assistant Professor, Department of Family(More)
OBJECTIVES We examined whether the timely initiation of antiretroviral therapy (ART) differed by race and comorbidity among older (≥ 50 years) people living with HIV/AIDS (PLWHA). METHODS We conducted frequency and descriptive statistics analysis to characterize our sample, which we drew from 2005-2007 Medicaid claims data from 14 states. We employed(More)
Background: Men who have sex with men (MSM) are disproportionately at risk of contracting HIV and other sexually transmissible infections (STIs). Correct and consistent condom use is the most effective method to prevent HIV and other STIs among sexually active MSM. Methods: Using data from the 2002, 2006-10, 2011-13 cycles of the National Survey of Family(More)
Currently, the Centers for Disease Control and Prevention recommends that persons between 15 and 64 years get tested for human immunodeficiency virus (HIV) at least once in their lifetime and persons with HIV risk factors get tested more frequently. There is limited research examining factors associated with never testing for HIV among non-Hispanic Black(More)
Community engagement remains a primary objective of public health practice. While this approach has been adopted with success in response to many community health issues, it is rarely adopted in chemical disaster response. Empirical research suggests that management of chemical disasters focuses on the emergency response with almost no community engagement(More)