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Table A-13. Imputation for postdoctoral appointees in science, engineering, and health fields, by mechanism of support, citizenship, and type of doctoral degree: 2013
Mechanism of support and citizenship All doctoral
degree type
Doctoral
degree
Professional
degree
Dual
degree
Doctoral degree
type unknown
Imputation rate (%)

    All postdoctoral appointees
4.0 4.8 6.4 11.8 12.0
        Fellowship 15.4 10.5 8.2 10.0 31.4
        Research grant 14.0 9.5 14.9 26.0 28.5
        Traineeship 15.5 10.7 23.1 18.8 23.2
        Other support 13.4 8.9 12.2 16.7 31.9

        U.S. citizens and permanent residents
9.8 6.1 11.3 28.3 32.7
        Foreign nationals with temporary visa 7.6 6.2 14.0 14.5 17.5

Number imputed

    All postdoctoral appointees
2,461 2,089 299 141 1,559
        Fellowship 1,001 408 68 13 512
        Research grant 5,561 2,752 229 156 2,431
        Traineeship 571 237 172 24 138
        Other support 1,627 714 187 57 716

        U.S. citizens and permanent residents
2,895 1,179 298 140 2,331
        Foreign nationals with temporary visa 2,469 1,486 282 102 1,029

SOURCE: National Science Foundation, National Center for Science and Engineering Statistics, NSF-NIH Survey of Graduate Students and Postdoctorates in Science and Engineering, 2013.
Data from survey cycle Fall 2013, as of 8 August 2014.