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Full-Text Articles in Physical Sciences and Mathematics
Evaluation Of Student Outcomes In Online Vs. Campus Biostatistics Education In A Graduate School Of Public Health, John Mcgready, Ron Brookmeyer
Evaluation Of Student Outcomes In Online Vs. Campus Biostatistics Education In A Graduate School Of Public Health, John Mcgready, Ron Brookmeyer
Ron Brookmeyer
Objective: To compare student outcomes between concurrent online and on-campus sections of an introductory biostatistics course offered at a U.S. school of public health in 2005. Methods: Enrolled students (95 online, 92 on-campus) were invited to participate in a confidential online survey. The course outcomes were compared between the two sections adjusting for differences in student characteristics. Results: Seventy-two online (76%) and 66 (72%) on-campus enrollees participated. Unadjusted final exam scores for the online and on-campus sections were respectively 85.1 and 86.3 (p = 0.50) in term 1, and 87.7 and 86.9 (p=0.58) in term 2. After adjustment for student …
Estimation Of Hiv Incidence Using Multiple Biomakers, Ron Brookmeyer, Jacob Konikoff, Oliver Laeyendecker, Susan Eshleman
Estimation Of Hiv Incidence Using Multiple Biomakers, Ron Brookmeyer, Jacob Konikoff, Oliver Laeyendecker, Susan Eshleman
Ron Brookmeyer
The incidence of human immunodeficiency virus (HIV) is the rate at which new HIV infections occur in populations. The development of accurate, practical, and cost-effective approaches to estimation of HIV incidence is a priority among researchers in HIV surveillance because of limitations with existing methods. In this paper, we develop methods for estimating HIV incidence rates using multiple biomarkers in biological samples collected from a cross-sectional survey. An advantage of the method is that it does not require longitudinal follow-up of individuals. We use assays for BED, avidity, viral load, and CD4 cell count data from clade B samples collected …