The STD Risk Assessment Project is just in its infancy. We are just now putting together a ‘proof of concept’ version of the risk calculator based on HIV data.   We are very much interested in looking for collaborators.  Write to us if interested in getting involved!

The Team

Karl FIMG_0316rost: MFA, MS Ecology is a PhD candidate in Ecology at UC Davis, focusing on Human Ecology.  He uses a Bayesian model comparison approach to behavioral science.  One of the focuses of his PhD research is on risk assessment, investment in sexual health education, and the cultural dynamics of subcultural sexual practices on disease ecology. As part of the assessment and communication of risk, he is interested in modeling the effects of more or less complexity in sexual choice heuristics. He is particularly interested in the policy implications of how exposure to and acceptance or rejection of sexual health information affects the cultural evolution of sexual practices.

cody 2Cody Ross is a PhD Candidate in Evolutionary Anthropology and Behavioral Ecology at the University of California, Davis. He is a Bayesian statistician whose work centers around the mathematical modelling of complex systems dynamics, such as human-environment interactions, disease ecology, and the evolution of fitness reducing cultural traits.   Methodologically, his work centers around multilevel Bayesian models, MCMC estimation, and information theoretic model comparison.


Deborah Cohan, MD, MPH is Professor in the Departments of Obstetrics, Gynecology and Reproductive Sciences as well as Family/Community Medicine at University of California, San Francisco. She attended Harvard Medical School and then completedDeb Cohan 090625A056 a residency in Obstetrics and Gynecology at UCSF. Following residency, she completed a fellowship in Reproductive Infectious Diseases at UCSF and a Masters in Public Health at UC Berkeley. She is currently Medical Director of Bay Area Perinatal AIDS Center (BAPAC) and provides preconception, prenatal and gynecologic care for HIV-infected women and HIV-affected couples. She is also the Clinical Director of the National HIV Perinatal Hotline and Clinician’s Network and Associate Director of the UCSF Fellowship in Reproductive Infectious Diseases. Dr. Cohan is a member of both the DHHS Panel on Antiretroviral Guidelines for Adults and the Panel on Treatment of HIV-Infected Pregnant Women. Dr. Cohan’s interests include HIV testing strategies, the use of antiretroviral therapy during pregnancy and lactation in resource-limited settings, and informed free-choice safer sex and safer conception counseling for HIV-affected couples.

IMG_1045_smRichard McElreath, PhD, Assistant Professor of Anthropology UC Davis is an evolutionary ecologist who studies humans and how the evolution of fancy social learning in humans accounts for the unusual nature of human adaptation and extraordinary scale and variety of human societies. He and his colleagues use formal evolutionary models, experiments and ethnographic fieldwork to address the puzzles of human behavior induced by the cultural evolutionary processes of socially transmitted behavior. He is currently working on a graduate-level text book on Bayesian statistical analysis and model comparison methods.