Table NotesList of Tables
Classification of Reporting Units
Company Size-Class
Geographic Statistics
Industry Classification
Nonmanufacturing industries agricultural
Rounding
Because of rounding, detail may not add to totals.
Suppression of Statistics
Table Notes
The basic reporting unit is the company or enterprise that includes all establishments under common ownership or control. All research and development (R&D;) expenditures and all scientists and
engineers of each company are classified into a single standard industrial classification (SIC) and size category.Companies are categorized by their total number of domestic employees. The following are the six company size classes used in this report:
Current and Constant DollarsStatistics in all tables are reported in terms of current dollars. Constant dollars are also presented in two summary trend tables, tables A-1 and A-22.The statistics cover only those operations located in the 50 States and the District of Columbia. Company-sponsored R&D; performed outside the United States by foreign subsidiaries of U.S. domestic
companies is included in table A-9 but is excluded from all other tables.An enterprise or company level SIC code was assigned to each company. A single SIC code was assigned to multiestablishment companies based on the code that represented the most dominant aggregated
activity for that firm in terms of total payroll. Statistics for the following industry groupings are published in this report (SIC code(s) are shown in parentheses [1] ):
Food, kindred, and tobacco products (20,21)[2]
Textiles and apparel (22,23)
Lumber, wood products, and furniture (24,25)
Paper and allied products (26)
Chemicals and allied products (28)
Industrial chemicals (281- 82,286)
Petroleum refining and extraction (13,29)
Drugs and medicines (283)
Other chemicals (284- 85,287- 89)
Rubber products (30)
Stone, clay, and glass products (32)
Primary metals (33)
Ferrous metals and products (331-32,3398-99)
Fabricated metal products (34)
Nonferrous metals and products (333-36)
Machinery (35)
Office, computing, and accounting machines (357)
Electrical equipment (36)
Other machinery, except electrical (351-56,358-59)
Radio and TV receiving equipment (365)
Transportation equipment (37)
Communication equipment (366)
Electronic components (367)
Other electrical equipment (361-64,369)
Motor vehicles and motor vehicles equipment (371)
Professional and scientific instruments (38)
Other transportation equipment (373-75,379)
Aircraft and missiles (372,376)[3]
Scientific and mechanical measuring instruments (381-82)
Optical, surgical, photographic, and other instruments (384-87)
Other manufacturing industries printing and publishing (27),
leather products (31), and miscellaneous manufacturing industries (39)
services, forestry, fishing and hunting (07-09); mining (10, 12-14); construction (15-17); transportation, communications, electric, gas, and sanitary services (40-42,44-49); wholesale and retail trade (50-59); finance, insurance, and real estate
(60-65); holding and other investment offices (67); hotels and motels (701); business services (73); automotive repair, services, and parking and miscellaneous repair services (75-76); motion pictures and amusement and recreation services (78-79);
health and legal services (80-81); social services (83); museums, art galleries, botanical and zoological gardens (84); engineering, accounting, research, management, and related services (87); and miscellaneous services (89).
PercentagesPercentages were calculated on the basis of thousands of dollars and may differ from those calculated using the rounded figures shown.The Bureau of the Census conducts the survey under Title 13 of the United States Code, which prohibits publication or release of data or statistics that may
reveal information about individual companies. Also, missing data are imputed for some data items. Therefore, the data in some of the table cells may have been deleted and replaced with one of the following notations:"(D)," which indicates that statistics are being withheld to avoid possible disclosure of information about operations of individual companies. This occurs when a small number of companies account
for a large percentage of the R&D; funds or of scientists and engineers in a particular data cell. The tables most often affected by this rule are those that contain data on Federal support to companies for R&D; performance."(S)," which indicates that the imputation rate the percentage of the statistic not reported by respondents and consequently estimated exceeds 50 percent for that item. See table B-3 in section B for imputation rates for specific items.Although publication of certain cells may be withheld, the estimates in the cells are always included in totals. In some instances, cells withheld because of high imputation rates (notation "(S)")
can be derived by subtraction from higher level totals. In such cases the user should be aware that the derived numbers are statistically unreliable. In no instance can cells be derived that would disclose operations of individual companies
(notation "(D)").
List of TablesThis is a comprehensive list of all tables in this publication. The list includes the detailed statistical tables in section A and the technical tables in section B.
TablesThe following technical tables contain statistics for which no attempt was made to link the estimates derived from data collected in the 1992 survey with data collected in previous surveys (see technical notes for full explanation).
1. When the 1992 sample was drawn, the 1987 revision of the standard industrial classification (SIC) system was in effect.
2. Until 1984, the tobacco products industry (SIC 21) was included with "other manufacturing industries."
3. Because of the close similarity of their R&D; activities, companies primarily engaged in the manufacture of ordnance and accessories, including complete guided missiles, are grouped with companies primarily
engaged in the manufacture of aircraft and parts.
