从非关税措施数据到影响（英）

Technical and statistical reportU NI T E D NAT I O NS CO NFE R E N C E ON T R A D E A N D D E VE L OP M E N TFrom non-tariff measures datato impactGuidelines for the analytical pathway from non-tariff measures inventory to trade impact assessment Guidelines for the analytical pathway from non-tariff measures inventory to trade impact assessment From non-tariff measures data to impactTechnical and statistical reportUNI T E D NAT I O NS CO NF E R E N C E ON T R A D E A N D D E VE L OP M E N T© Adobe Stock / Art_PhotoGeneva, 2025© 2025, United NationsAll rights reserved worldwideRequests to reproduce excerpts or to photocopy should be addressed to the Copyright Clearance Center at copyright.com.All other queries on rights and licences, including subsidiary rights, should be addressed to: United Nations Publications405 East 42nd StreetNew York, New York 10017United States of AmericaEmail: publications@un.orgWebsite: https://shop.un.orgThe designations employed and the presentation of material on any map in this work do not imply the expression of any opinion whatsoever on the part of the United Nations concerning the legal status of any country, territory, city or area or of its authorities, or concerning the delimitation of its frontiers or boundaries.This publication has not been formally edited.United Nations publication issued by the United Nations Conference on Trade and DevelopmentUNCTAD/DITC/TAB/2025/4ISBN: 978-92-1-159601-4eISBN: 978-92-1-154582-1Sales No. E.25.II.D.43From non-tariff measures data to impactGuidelines for the analytical pathway from non-tariff measures inventory to trade impact assessment iiiTable of contentsAcknowledgements .......................................................................... vChapter IIntroduction ....................................................................................... 1Chapter IIFrom NTMs data to trade impact analysis: A logical sequence .... 5A. Regulation level and measures level ........................................ 7B. Time dimension of the NTMs data in TRAINS.......................... 91. TRAINS online is an unbalanced panel dataset. One datapoint cannot be used as the sole information source for studying evolution of NTMs statistics over time ....................... 92. How many more NTMs do we have now comparedto one or two decades ago? .................................................. 11C. NTMs descriptive statistical indicators .................................. 141. Dataset for bulk download ..................................................... 142. The indicators ......................................................................... 143. The uses of indicators ............................................................ 184. Limitations of NTMs indicators ............................................... 205. Selected indicator results ....................................................... 21D. Complementing NTMs indicators: Econometrictechniques and AVEs........