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Table A-19. Imputed amounts for headcount of R&D personnel, by type of personnel: FY 2015

Type of personnel All R&D personnel Imputed amount Imputed amount as % of total
All personnel 902,801 102,010 11.3
Principal investigators 157,885 11,485 7.3
Other personnel 744,916 84,530 11.3
NOTE: This table includes only institutions reporting $1 million or more in total R&D expenditures in FY 2014. Institutions reporting less than $1 million in total R&D expenditures in FY 2014 completed a shorter version of the survey form in FY 2015, and that form did not include this question.
SOURCE: National Science Foundation, National Center for Science and Engineering Statistics, Higher Education Research and Development Survey, FY 2015.