Concordance Between the 2002 North American Industry Classification and the 1987 Standard Industrial Classification Systems in the PPI
With the release of data for January 2004, the Producer
Price Index program changed its basis for industry classification from
the 1987 Standard Industrial Classification (SIC) system to the North American
Industry Classification System (NAICS). Developed in cooperation with Canada
and Mexico, NAICS represents one of the most profound changes for statistical
programs focusing on emerging economic activities. The system was developed using
a production-oriented conceptual framework, grouping establishments into industries
based on the activity in which they are primarily engaged.
While many NAICS industries directly compare with SIC industries, a number of SIC
industries were split or combined to form a new NAICS industry. The PPI treats
the SIC-to-NAIC comparison as continuous if 80 percent or more of the weight of the
SIC-based index comprises at least 80 percent of the weight of the NAICS-based index.
All index series that have passed this test are published under the NAICS structure using
the index base date and price index history established by the SIC-based index.
- NAICS to SIC Concordance
- SIC to NAICS Concordance
Last Modified Date: March 24, 2004
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