Implications of COMTRADE Compilation Practices for Trade Barrier Analyses and Negotiations
指出联合国商品贸易统计（COMTRADE）数据在关税和贸易壁垒分析中存在严重缺陷，尤其是到岸价计价基础和一般贸易体系导致进口价值高估，影响贸易模拟和谈判的可靠性。
U.N. Commodity Trade (COMTRADE) statistics have major shortcomings for many analyses relating to tariffs and other trade barriers. The use of a cost-insurance-freight valuation base for these data results in an upward (sometimes severe) bias in the implied dutiable value of imports for countries that utilize free-on-board tariffs. This problem can be greatly exacerbated by the "general" trade system procedure used to compile the U.N. statistics, as opposed to the "special" trade practice used for the World Trade Organization Integrated Database. U.S. International Trade Commission statistics show that the combined effects of these biases can reach magnitudes that preclude the legitimate use of COMTRADE for many tariff-trade simulations or related trade negotiations.