This database is an NAICS bridge between the 1997 and 2002 NAICS codes

If you are using long-term regressional analysis models then this database is applicable as it will ensure compatibility.

If your modelling software does not need (or use) long-term regressional data then it may be advisable to obtain a database with the newer 2002 NAICS industry codes.

Please ensure that you obtain the correct database for your needs.