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Table A-15. Imputation for doctorate-holding nonfaculty researchers in science, engineering, and health, by type of doctoral degree and sex: 2018

Type of doctoral degree Total Male Female
Imputation rate (%)
All nonfaculty researchers 10.0 10.8 9.6
Doctoral degree 12.4 12.8 11.8
Professional degree 12.7 14.9 10.7
Dual degree 29.1 33.0 22.4
Doctoral degree type unknown 7.6 7.4 7.7
Number imputeda
All nonfaculty researchers 2,937 1,887 1,140
Doctoral degree 2,712 1,743 983
Professional degree 225 127 98
Dual degree 130 94 36
Doctoral degree type unknown 393 205 188
a This table reports the sum of counts imputed in each of these cells and variables. Because some units report totals without complete details, the sum of the imputed details will often be higher than the related total.
NOTE: Doctoral degree includes PhD, ScD, DEng, etc.; professional degree includes MD, DVM, DO, DDS, etc.; dual degree includes both professional and doctoral degrees (MD-PhD, DVM-PhD, etc.).
SOURCE: National Center for Science and Engineering Statistics, Survey of Graduate Students and Postdoctorates in Science and Engineering, 2018.