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Table A-8. Imputation for nonresponse in master's-granting institutions, by field and graduate enrollment or postdoctoral status: 2011–13
  Total in survey Number imputed Imputation rate (%)
Year and field Organizational
units in
universe		 Full-time
student		 Part-time
student		 Post-
doctorate		 Full-time
student		 Part-time
student		 Post-
doctorate		 Full-time
student		 Part-time
student		 Post-
doctorate
Fall 2013, all surveyed fields 1,412 29,003 30,003 118 414 974 21 1.4 3.2 17.8
    Science and engineering 1,273 24,295 27,117 112 414 974 21 1.7 3.6 18.8
        Science 1,104 21,262 23,876 110 399 958 21 1.9 4.0 19.1
            Agricultural sciences 45 600 429 8 0 0 0 0.0 0.0 0.0
            Biological sciences 186 2,767 2,695 19 5 1 0 0.2 0.0 0.0
            Communication 58 734 1,158 0 0 0 0 0.0 0.0 0.0
            Computer sciences 110 3,971 2,643 4 38 60 2 1.0 2.3 50.0
            Earth, atmospheric, and ocean sciences 47 396 514 9 0 0 0 0.0 0.0 0.0
            Family and consumer sciences and human sciences 8 188 182 0 0 0 0 0.0 0.0 0.0
            Mathematical sciences 74 814 1,202 1 6 9 0 0.7 0.7 0.0
            Multidisciplinary and interdisciplinary studies 37 183 317 2 24 46 0 13.1 14.5 0.0
            Neuroscience 3 1 34 3 0 0 0 0.0 0.0 0.0
            Physical sciences 70 555 520 40 0 0 0 0.0 0.0 0.0
            Psychology 196 6,010 4,813 23 41 95 19 0.7 2.0 82.6
            Social sciences 270 5,043 9,369 1 285 747 0 5.7 8.0 0.0
        Engineering 169 3,033 3,241 2 15 16 0 0.5 0.5 0.0
            Aerospace engineering 2 40 40 0 0 0 0 0.0 0.0 0.0
            Agricultural engineering 0 0 0 0 0 0 0 0.0 0.0 0.0
            Architecture 1 14 12 0 0 0 0 0.0 0.0 0.0
            Biomedical engineering 7 77 63 0 0 0 0 0.0 0.0 0.0
            Chemical engineering 6 32 47 0 0 0 0 0.0 0.0 0.0
            Civil engineering 29 428 695 0 0 0 0 0.0 0.0 0.0
            Electrical engineering 47 1,414 930 0 0 0 0 0.0 0.0 0.0
            Engineering science 4 35 27 0 0 0 0 0.0 0.0 0.0
            Industrial engineering 22 365 401 0 0 0 0 0.0 0.0 0.0
            Mechanical engineering 22 341 545 2 0 0 0 0.0 0.0 0.0
            Metallurgical and materials engineering 3 32 35 0 0 0 0 0.0 0.0 0.0
            Mining engineering 1 2 0 0 0 0 0 0.0 0.0 0.0
            Nuclear engineering 0 0 0 0 0 0 0 0.0 0.0 0.0
            Petroleum engineering 1 3 1 0 0 0 0 0.0 0.0 0.0
            Engineering nec 24 250 445 0 15 16 0 6.0 3.6 0.0
    Health 139 4,708 2,886 6 0 0 0 0.0 0.0 0.0
        Clinical medicine 34 798 943 3 0 0 0 0.0 0.0 0.0
        Other health 105 3,910 1,943 3 0 0 0 0.0 0.0 0.0

Fall 2012, all surveyed fields		 1,385 26,321 29,344 87 299 500 2 1.1 1.7 2.3
    Science and engineering 1,237 21,821 26,391 76 253 483 2 1.2 1.8 2.6
        Science 1,075 19,184 22,976 71 227 413 2 1.2 1.8 2.8
            Agricultural sciences 50 560 448 5 0 0 0 0.0 0.0 0.0
            Biological sciences 184 2,860 2,591 21 27 37 0 0.9 1.4 0.0
            Communication 56 803 1,276 0 5 2 0 0.6 0.2 0.0
            Computer sciences 105 2,369 2,873 3 52 68 2 2.2 2.4 66.7
            Earth, atmospheric, and ocean sciences 49 418 482 9 0 3 0 0.0 0.6 0.0
            Family and consumer sciences and human sciences 10 241 281 0 0 0 0 0.0 0.0 0.0
            Mathematical sciences 76 798 1,198 2 8 34 0 1.0 2.8 0.0
            Multidisciplinary and interdisciplinary studies 31 180 308 1 3 7 0 1.7 2.3 0.0
            Neuroscience 1 0 0 1 0 0 0 0.0 0.0 0.0
            Physical sciences 64 586 505 22 3 10 0 0.5 2.0 0.0
            Psychology 181 5,495 4,170 6 48 69 0 0.9 1.7 0.0
            Social sciences 268 4,874 8,844 1 81 183 0 1.7 2.1 0.0
        Engineering 162 2,637 3,415 5 26 70 0 1.0 2.0 0.0
            Aerospace engineering 2 46 37 0 0 0 0 0.0 0.0 0.0
            Agricultural engineering 1 4 4 0 0 0 0 0.0 0.0 0.0
            Architecture 1 8 15 0 0 0 0 0.0 0.0 0.0
            Biomedical engineering 3 47 25 0 0 0 0 0.0 0.0 0.0
            Chemical engineering 6 45 35 0 0 0 0 0.0 0.0 0.0
            Civil engineering 28 463 649 1 0 0 0 0.0 0.0 0.0
            Electrical engineering 42 998 959 0 3 6 0 0.3 0.6 0.0
            Engineering science 4 32 22 0 0 0 0 0.0 0.0 0.0
            Industrial engineering 23 371 523 0 0 0 0 0.0 0.0 0.0
            Mechanical engineering 22 299 561 2 0 0 0 0.0 0.0 0.0
            Metallurgical and materials engineering 3 38 30 2 0 0 0 0.0 0.0 0.0
            Mining engineering 1 1 0 0 0 0 0 0.0 0.0 0.0
            Nuclear engineering 0 0 0 0 0 0 0 0.0 0.0 0.0
            Petroleum engineering 1 2 3 0 0 0 0 0.0 0.0 0.0
            Engineering nec 25 283 552 0 23 64 0 8.1 11.6 0.0
    Health 148 4,500 2,953 11 46 17 0 1.0 0.6 0.0
        Clinical medicine 30 550 913 5 0 0 0 0.0 0.0 0.0
        Other health 118 3,950 2,040 6 46 17 0 1.2 0.8 0.0

Fall 2011, all surveyed fieldsa		 1,366 26,669 29,617 94 837 540 2 3.1 1.8 2.1
    Science and engineering 1,223 22,173 27,009 86 524 469 2 2.4 1.7 2.3
        Science 1,056 19,101 23,506 80 489 451 0 2.6 1.9 0.0
            Agricultural sciences 46 559 492 2 27 9 0 4.8 1.8 0.0
            Biological sciences 182 3,009 2,728 25 42 68 0 1.4 2.5 0.0
            Communication 50 860 1,167 2 66 9 0 7.7 0.8 0.0
            Computer sciences 105 2,454 2,660 3 71 53 0 2.9 2.0 0.0
            Earth, atmospheric, and ocean sciences 50 431 502 7 8 4 0 1.9 0.8 0.0
            Family and consumer sciences and human sciences 13 268 451 0 0 0 0 0.0 0.0 0.0
            Mathematical sciences 75 716 1,118 2 24 29 0 3.4 2.6 0.0
            Multidisciplinary and interdisciplinary studies 32 313 439 0 0 0 0 0.0 0.0 0.0
            Neuroscience 1 2 27 0 0 0 0 0.0 0.0 0.0
            Physical sciences 70 587 451 31 20 13 0 3.4 2.9 0.0
            Psychology 176 5,052 3,826 7 117 66 0 2.3 1.7 0.0
            Social sciences 256 4,850 9,645 1 114 200 0 2.4 2.1 0.0
        Engineering 167 3,072 3,503 6 35 18 2 1.1 0.5 33.3
            Aerospace engineering 2 51 35 0 0 0 0 0.0 0.0 0.0
            Agricultural engineering 1 0 1 0 0 0 0 0.0 0.0 0.0
            Architecture 1 18 8 0 0 0 0 0.0 0.0 0.0
            Biomedical engineering 2 84 17 0 0 0 0 0.0 0.0 0.0
            Chemical engineering 7 45 42 0 0 0 0 0.0 0.0 0.0
            Civil engineering 30 465 603 0 18 2 0 3.9 0.3 0.0
            Electrical engineering 41 1,135 1,045 0 7 6 0 0.6 0.6 0.0
            Engineering science 5 29 18 1 0 0 0 0.0 0.0 0.0
            Industrial engineering 26 514 560 0 9 9 0 1.8 1.6 0.0
            Mechanical engineering 23 326 569 4 1 1 2 0.3 0.2 50.0
            Metallurgical and materials engineering 3 38 32 1 0 0 0 0.0 0.0 0.0
            Mining engineering 1 2 0 0 0 0 0 0.0 0.0 0.0
            Nuclear engineering 0 0 0 0 0 0 0 0.0 0.0 0.0
            Petroleum engineering 1 7 2 0 0 0 0 0.0 0.0 0.0
            Engineering nec 24 358 571 0 0 0 0 0.0 0.0 0.0
    Health 143 4,496 2,608 8 313 71 0 7.0 2.7 0.0
        Clinical medicine 29 538 738 4 12 4 0 2.2 0.5 0.0
        Other health 114 3,958 1,870 4 301 67 0 7.6 3.6 0.0

nec = not elsewhere classified.
a The 2011 postdoc data was reimputed following the 2012 data collection; these response statistics have been updated to reflect the reimputed data and supersede those contained in previous reports.
SOURCE: National Science Foundation, National Center for Science and Engineering Statistics, NSF-NIH Survey of Graduate Students and Postdoctorates in Science and Engineering.
Data from survey cycle Fall 2013, as of 8 August 2014.
r.1221 20150403 (internal editing revision number, will not be published)