Table A-13. Imputation for postdoctoral appointees in science, engineering, and health fields, by mechanism of support, citizenship, and type of doctoral degree: 2015
Mechanism of support
All doctoral degree types
Doctoral degree
Professional degree
Dual degree
Doctoral degree type unknown
Imputation rate (%)
All postdoctoral appointees
2.3
3.9
2.9
4.4
1.6
Fellowships
18.7
7.6
4.4
7.2
54.2
Research grant
11.8
6.6
4.8
6.9
32.1
Traineeship
11.7
8.5
6.6
2.0
28.9
Other support
12.1
7.0
2.8
7.8
34.9
U.S. citizens and permanent residents
3.6
4.2
2.7
3.9
7.1
Foreign nationals with temporary visa
3.7
3.9
3.2
5.0
7.1
Number imputed
All postdoctoral appointees
1,461
1,741
122
46
222
Fellowships
1,177
281
39
10
847
Research grant
4,679
1,973
59
30
2,704
Traineeship
455
211
39
2
203
Other support
1,678
633
42
30
1,010
U.S. citizens and permanent residents
1,046
810
66
17
475
Foreign nationals with temporary visa
1,315
1,012
56
31
487
