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. 2011 Sep 30;1(3):193–198. doi: 10.5681/bi.2011.027

Table 2. Frequency of publication type of documents in the field of nanotechnology in MEDLINE 2001-2010.

Rank Publication Type Frequency Percent
1 Journal Article 11109 41%
2 Research Support, Non-U.S. Gov't 7022 26%
3 Research Support, U.S. Gov't, Non-P.H.S. 2726 10%
4 Review 1694 6%
5 Evaluation Studies 1029 4%
6 Research Support, N.I.H., Extramural 989 4%
7 Comparative Study 448 2%
8 News 346 1%
9 Research Support, U.S. Gov't, P.H.S. 276 1%
10 Editorial 248 1%
11 Comment 232 1%
12 English Abstract 159 1%
13 Letter 146 1%
14 Validation Studies 119 0%
15 Introductory Journal Article 85 0%
16 Congresses 80 0%
17 Historical Article 46 0%
18 In Vitro 46 0%
19 Research Support, N.I.H., Intramural 31 0%
20 Overall 22 0%
21 Interview 21 0%
22 Biography 10 0%
23 Portraits 8 0%
24 Case Reports 5 0%
25 Lectures 4 0%
26 Video-Audio Media 4 0%
27 Randomized Controlled Trial 3 0%
28 Retracted Publication 3 0%
29 Bibliography 2 0%
30 Clinical Trial 2 0%
31 Newspaper Article 2 0%
32 Technical Report 2 0%
33 Webcasts 2 0%
34 Consensus Development Conference 1 0%
35 Consensus Development Conference, NIH 1 0%
36 Controlled Clinical Trial 1 0%
37 Festschrift 1 0%
38 Guideline 1 0%
39 Research Support, American Recovery and Reinvestment Act 1 0%
Total 26,927 100%