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Table 50. Postdoctoral appointees in science, engineering, and health, by citizenship, ethnicity, race, origin of doctoral degree, and field: 2013
  Science and engineering Health
Characteristic All science,
engineering,
and health
Total Science Engineering Total Clinical medicinea Other health
Total 61,942 43,395 36,289 7,106 18,547 15,831 2,716
   U.S. citizens and permanent residentsb 29,546 20,257 17,551 2,706 9,289 7,887 1,402
      Hispanic or Latino 1,490 961 845 116 529 436 93
      Not Hispanic or Latino              
         American Indian or Alaska Native 121 71 68 3 50 46 4
         Asian 5,440 3,526 2,898 628 1,914 1,645 269
         Black or African American 1,132 667 607 60 465 397 68
         Native Hawaiian or Other Pacific Islander 77 50 46 4 27 26 1
         White 17,348 11,953 10,640 1,313 5,395 4,543 852
         More than one race 263 165 147 18 98 92 6
      Unknown ethnicity and race 3,675 2,864 2,300 564 811 702 109
   Temporary visa holders 32,396 23,138 18,738 4,400 9,258 7,944 1,314
   Origin of doctoral degreec              
      United Statesd 22,701 16,128 13,708 2,420 6,573 5,678 895
      Foreign country 17,650 11,975 10,340 1,635 5,675 5,030 645
      Unknown degree origin 21,591 15,292 12,241 3,051 6,299 5,123 1,176

a Includes postdoctoral appointees in anesthesiology, cardiology, endocrinology, gastroenterology, hematology, neurology, obstetrics and gynecology, oncology and cancer research, ophthalmology, otorhinolaryngology, pediatrics, preventive medicine and community health, psychiatry, pulmonary disease, radiology, surgery, and clinical medicine, not elsewhere classified.
b Ethnicity and race data are available only for U.S. citizens and permanent residents.
c Doctoral degree = PhD, ScD, DEng, etc.; professional degree = MD, DVM, DO, DDS, etc.; dual degree = both professional and doctoral degrees (MD-PhD, DVM-PhD, etc.).
d United States includes Puerto Rico and U.S. territories.
NOTE: "Field" refers to the field of the unit that reports postdocs to the Survey of Graduate Students and Postdoctorates in Science and Engineering.
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.