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development. Using an IV strategy based on an equilibrium model of fish supply that exploits time-series variation in oceanic SST …We exploit variation in the composition of local fish catches around the time of birth using administrative and census … the causal effects of early-life consumption of methylmercury (MeHg) and DHA, elements contained in fish, on cognitive …
Persistent link: https://www.econbiz.de/10012481914
In the mid-19th century, the urban milk supply in the United States was regularly skimmed or diluted with water, reducing its nutritional value. At the urging of public health experts, cities across the country hired milk inspectors, who were tasked with collecting and analyzing milk samples...
Persistent link: https://www.econbiz.de/10012794647
Using proprietary data from Alibaba, we examine how the 2015 Food Safety Law (FSL) affects e-commerce in China. The FSL requires most food sellers on e-commerce platforms to obtain a valid, online license for retail food handling. Because the FSL was rolled out progressively, we have a rare...
Persistent link: https://www.econbiz.de/10012482103
This paper reports estimates of consumers' preferences for plans to improve food safety. The plans are distinguished based on whether they address the ex ante risk of food borne illness or the ex post effects of the illness. They are also distinguished based on whether they focus on a public...
Persistent link: https://www.econbiz.de/10012464359
In the United States, drug safety and efficacy are primarily regulated by the Food and Drug Administration (FDA) and the legal system, which gives manufacturers large incentives to produce safe drugs and provide proper warnings for side effects, since patients can sue manufacturers that provide...
Persistent link: https://www.econbiz.de/10012465086
Comparing the safety of prescription drugs over time is difficult due to the paucity of reliable quantitative measures of drug safety. Both the academic literature and popular press have focused on drug withdrawals as a proxy for breakdowns in the drug safety system. This metric, however, is...
Persistent link: https://www.econbiz.de/10012465856
Implicit in the drug-approval process is a trade-off between Type I and Type II error. We explore the application of Bayesian decision analysis (BDA) to minimize the expected cost of drug approval, where relative costs are calibrated using U.S. Burden of Disease Study 2010 data. The results for...
Persistent link: https://www.econbiz.de/10012457169
The Melitz model highlights the importance of the extensive margin (the number of firms exporting) for trade flows. Using the World Bank's Exporter Dynamics Database (EDD) featuring firm-level exports from 50 countries, we find that around 50% of variation in exports is along the extensive...
Persistent link: https://www.econbiz.de/10012480847
two time series to serve as indicators of broader changes rather than considering the export sector as a whole. Here we … present new comprehensive export measures for the middle colonies. We find that aggregate exports in constant prices grew very … trade increased the colonists' ability to buy imports over time, especially after 1740. Although the export sector performed …
Persistent link: https://www.econbiz.de/10012464314
that changes in various extensive margins (new markets, new goods) account for over 30 percent of export growth over this …-level characteristics interacting with destination-specific characteristics. We confirm that export growth for "new" products was stronger …
Persistent link: https://www.econbiz.de/10012455200