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Race, Gender, and Obesity: How the Social Environment Constrains or Enables Physical Activity
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Faculty associate Rashawn Ray investigates the social and environmental changes needed in order to remove neighborhood barriers to regular physical exercise
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Research
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Selected Research
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Why Women Live Longer
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Faculty Associate Philip Cohen points to male smoking habits as an important factor in understanding the relative longevity of women
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News
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The Long-Term Effects of Early Lead Exposure: Evidence from a Case of Environmental Negligence
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Sergio Urzua, University of Maryland; Tomás Rau, Pontificia Universidad Católica de Chile; Loreto Reyes, Ministry of Finance, Chile; 2013-015
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Working Papers
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WP Documents
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Hofferth decries politicization of health care in Baltimore Sun Op-Ed
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Calls statements by Eric Cantor and others a "red herring" to avoid uncomfortable policy questions
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News
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Using propensity scores for causal inference with covariate measurement error
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Faculty Associate Frauke Kreuter's project, an R01 funded by the National Institute of Mental Health, seeks to develop and assess new statistical methods
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Research
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Selected Research
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Gaming in Air Pollution Data? Lessons from China
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Ginger Zhe Jin, University of Maryland, et al.; 2013-011
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Research
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Working Papers
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WP Documents
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Multidimensional Pathways to Healthy Aging among Filipino Women
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Feinian Chen is working with the University of North Carolina, Chapel Hill, on an interdisciplinary study for the National Institute on Aging on health and functional outcomes in women's "transitional years" of middle and later adulthood
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Research
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Selected Research
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Change in Elderly Living Arrangements in Rural South Africa, 2000-2010
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Sangeetha Madhavan project, an R03 funded by NICHD, examines the impact of HIV on the probability that an elderly person will face a transition in living arrangements
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Research
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Selected Research
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Rashawn Ray profiled by Robert Wood Johnson Foundation
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A member of RWJF Scholars in Health Research program
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News
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Optimal Aggregation of Consumer Ratings: An Application to Yelp.com
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Because consumer reviews leverage the wisdom of the crowd, the way in which they are aggregated is a central decision faced by platforms. We explore this "rating aggregation problem" and offer a structural approach to solving it, allowing for (1) reviewers to vary in stringency and accuracy, (2) reviewers to be influenced by existing reviews, and (3) product quality to change over time. Applying this to restaurant reviews from Yelp.com, we construct an adjusted average rating and show that even a simple algorithm can lead to large information efficiency gains relative to the arithmetic average.
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Retired Persons
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Ginger Zhe Jin, Ph.D.
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Ginger Zhe Jin Publications
