Please use this identifier to cite or link to this item: https://hdl.handle.net/10419/333263 
Year of Publication: 
2023
Citation: 
[Journal:] Journal of Economics and Statistics [ISSN:] 2366-049X [Volume:] 243 [Issue:] 6 [Year:] 2023 [Pages:] 643-662
Publisher: 
De Gruyter Oldenbourg, Berlin
Abstract: 
Firm-product data provide information for various research questions in international trade, industrial or innovation economics. However, working with these data requires harmonizing product classifications consistently over time to avoid internal validity issues. Harmonization is required because classification systems like the EU classifications combined nomenclature (CN) for goods or the Prodcom for the production of manufactured goods undergo several changes. We have addressed this problem and developed an approach to harmonize product codes. This approach tracks product codes from 1995 to 2022 for CN and 2001 to 2021 for Prodcom. Additional years can be conveniently added. We provide the harmonized product codes for CN and Prodcom in the selected period's last (or first) year. Our approach is summarized in an open-source R package so that researchers can consistently track product codes for their selected period. We demonstrate the importance of harmonization using the micro-level trade data for Croatia as a case study. Our approach facilitates working with firm-product data, allowing the analysis of important research questions.
Subjects: 
BEC
CN
concordance
HS
Prodcom
product code
JEL: 
C81
F14
O12
C55
Persistent Identifier of the first edition: 
Creative Commons License: 
cc-by Logo
Document Type: 
Article

Files in This Item:
File
Size





Items in EconStor are protected by copyright, with all rights reserved, unless otherwise indicated.