Open Access statistics for PTC (United States), United States, covering academic research published from 2000 to 2025. Read More.
Open Access Percentage
39%
Total
Publications
378
Total Open
Publications
146
Total
Citations
4.7K
Open Access
Percentage
39%
Total
Publications
378
Total Open
Publications
146
Total
Citations
4.7K
Breakdown
Publisher Open
22%
Both
11%
Other Platform Open
3%
Closed
64%
Percentage of Open Access over time
Publisher Open
Both
Other Platform Open
Closed
Volume of Open Access over time
Open
Closed
Publisher Open
OA Journal 30%
36
Hybrid 25%
30
No Guarantees 45%
54
Other Platform Open
Institution 69%
38
Domain 24%
13
Other Internet 20%
11
Preprint 9%
5
Public 2%
1
Other Platform Locations
Name | Platform Type | Publications |
|---|---|---|
LA Referencia | Institution | 20 |
PubMed Central | Domain | 14 |
doaj.org OAI-PMH Repository | Institution | 14 |
DOI | Other Internet | 9 |
arXiv | Preprint | 6 |
aecid.es OAI-PMH Repository | Institution | 5 |
Unknown Repository | Other Internet | 3 |
Office of Scientific and Technical Information | Institution | 3 |
Indiana University | Institution | 3 |
University of Groningen | Institution | 2 |
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