Note to Users of Historical Statistics
To obtain accurate historical statistics for 1985--94, use only the detailed statistical tables in this report and not those published earlier. As a result of a new sample design, statistics for 1988--91 have been revised since originally published. These statistics now better reflect R&D performance among firms in the nonmanufacturing industries and small firms in all industries. Also, prior to the 1995 cycle of the survey, data for previous years were reviewed for consistency with current-year responses and were revised systematically during processing. This practice of routinely revising already-published statistics has been discontinued. Because of these changes, this report contains the latest revised statistics from the Survey of Industrial Research and Development for 1985--96. These changes and others are discussed in the technical notes in section B.
