2003-11-30-美国商务部-Digital_Economy_2003_–_Technical_Appendix_38页_724kb

Summary of U.S. Department of Commerce Technical Appendices for Digital Economy 2003

Chapter I: Measuring GDP for Information Technology-Producing Industries

• Industry Definition: Includes manufacturers of electronic components, computers, telecommunications equipment, software, and service providers. Industries are classified using the North American Industrial Classification System (NAICS), with updates from 1997 to 2002 affecting categorizations.
• Data Sources and Methods: GDP is estimated using data from the Bureau of the Census and the Bureau of Economic Analysis (BEA). Methods involve adjusting for intermediate inputs, using input-output models, and applying hedonic deflators for price changes. For 2002 and 2003, estimates were derived from modeling due to lack of specific data.
• Key Revisions: Significant revisions in 1997-2000 adjusted GDP calculations, mostly upward, due to changes in accounting for intermediate inputs and software investments. Real GDP is chained to 1996 dollars to account for inflation.

Chapter II: Information Technology Workers in the Digital Economy

• Industry Redefinition: Based on the 2002 NAICS, IT-producing industries are grouped into Computer Hardware, Software and Services, Communications Equipment, and Communications Services. Non-IT industries were excluded, and industry segments like retail and wholesale trade are split and allocated to hardware and software sectors.
• Employment Measurement: Uses data from the Bureau of Labor Statistics (BLS) Current Employment Statistics (CES) and Covered Employment and Wages (CEW) surveys. Adjustments are made when data are aggregated, using employment distributions to allocate specific industries.
• Wage and Unemployment Data: Average annual wages are based on CEW data, excluding benefits. Unemployment rates are derived from the Current Population Survey (CPS), though these are not directly comparable to occupation-specific wages from the Occupational Employment Statistics (OES).
• Occupation Classification: IT-related occupations include those maintaining IT infrastructure and enabling electronic commerce. Education and training requirements are categorized by BLS into high, moderate, and low intensity levels for each occupation.