摘要：The article investigates the duration of comparative advantage indices in the European Union (EU-27) agri-food exports using the normalised revealed comparative advantage index on the global market. There is employed both a descriptive analysis of the duration of comparative advantage, and examined the major drivers using discrete-time duration models with proper controls for unobserved heterogeneity. The robustness of the models is tested with alternative estimation procedures and sub-samples. Estimations show that the comparative advantages for most agri-food products survived for a certain number of years, but a high percentage of them have a shorter duration. Larger trade costs decrease the probability of survival in comparative advantages, while the level of economic development, the size of the country, the agri-food export diversification, and being a new EU member state increases it. Implications for the EU-27 member states and agri-food policies are suggested in the conclusion.
关键词：normalised revealed comparative advantage; duration analysis; discrete time models; agri-food exports; European Union
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