The following HTML text is provided to enhance online
readability. Many aspects of typography translate only awkwardly to HTML.
Please use the page image
as the authoritative form to ensure accuracy.
Doctoral Scientists and Engineers in the United States
TABLE 25 Number of Postdocs Ever Held by Science and Engineering Ph.D.s, by Field of Doctorate and Years Since Doctorate, 1995 (in percent)
Field of Doctorate
Years Since Doctorate and Number of Postdocs
All Fields
Computer Sciences
Mathematical Sciences
Chemistry
Physics and Astronomy
Earth/Atmospheric/Marine Sciences
Agricultural/Environmental Sciences
Biological Sciences
Health Sciences
Social Sciences
Psychology
Engineering
Total Population (No.)
542,500
6,600
25,200
61,400
38,700
16,500
22,400
109,900
16,900
75,800
82,200
87,000
None
66.4
89.7
81.1
52.1
49.3
65.6
73.3
38.3
79.5
88.2
74.7
82.6
1
25.0
9.7
13.8
35.5
36.1
28.9
20.4
41.7
17.2
9.1
21.1
15.6
2
6.7
0.6
3.7
9.7
11.8
4.4
5.0
15.5
2.3
1.9
3.2
1.4
3 or More
1.9
0.0
1.4
2.7
2.7
1.1
1.4
4.5
0.9
0.7
1.0
0.4
5 Years or Less
104,200
3,400
3,800
9,200
6,100
3,200
3,800
21,200
5,000
12,400
16,000
20,100
None
59.6
87.9
69.7
39.0
28.4
49.9
55.9
29.1
78.8
90.1
71.4
73.4
1
32.0
11.0
19.0
50.6
50.2
41.2
34.6
51.8
19.4
8.8
25.0
23.9
2
7.2
1.1
7.7
9.6
19.1
6.5
7.5
17.0
1.4
1.0
2.4
2.4
3 or More
1.2
0.0
3.6
0.9
2.3
2.4
2.0
2.1
0.3
0.1
1.1
0.3
6-10 Years
88,800
2,000
3,000
8,700
5,000
2,500
3,500
17,400
3,500
11,400
14,500
17,200
None
63.4
92.1
81.0
44.1
38.9
54.1
64.7
27.5
81.7
91.2
73.1
81.1
1
26.8
7.8
14.3
42.1
40.9
34.9
28.5
46.6
16.0
6.4
23.0
16.5
2
7.7
0.1
4.7
11.9
15.6
9.1
6.3
19.8
1.2
1.9
2.8
2.0
3 or More
2.1
0.0
0.0
2.0
4.6
1.9
0.4
6.1
1.1
0.5
1.0
0.4
11-15 Years
78,600
*
3,000
7,400
4,500
2,300
3,800
17,000
2,900
12,200
15,400
9,400
None
65.0
*
81.4
54.0
48.6
60.4
73.2
32.0
77.0
85.9
74.1
85.7
1
25.8
*
12.8
35.8
37.2
34.8
17.2
43.8
20.1
12.3
22.1
12.5
2
7.3
*
3.3
8.3
12.1
3.3
7.9
18.9
2.6
1.7
3.6
0.9
3 or More
1.8
*
2.5
1.9
2.1
1.4
1.7
5.3
0.3
0.1
0.2
0.9
