
Open Access statistics for AOL (United States), United States, covering academic research published from 2000 to 2025. Read More.
Open Access Percentage
67%
Total
Publications
1.6K
Total Open
Publications
1.1K
Total
Citations
23K
Open Access
Percentage
67%
Total
Publications
1.6K
Total Open
Publications
1.1K
Total
Citations
23K
Breakdown
Publisher Open
12%
Both
45%
Other Platform Open
10%
Closed
33%
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 46%
411
Hybrid 32%
282
No Guarantees 22%
198
Other Platform Open
Institution 76%
656
Domain 61%
525
Other Internet 9%
74
Preprint 6%
55
Public 0%
4
Other Platform Locations
Name | Platform Type | Publications |
|---|---|---|
PubMed Central | Domain | 558 |
University of Milan | Institution | 373 |
doaj.org OAI-PMH Repository | Institution | 244 |
Unknown Repository | Other Internet | 53 |
University of Milano-Bicocca | Institution | 39 |
unipa.it OAI-PMH Repository | Institution | 35 |
DOI | Other Internet | 35 |
University of Modena and Reggio Emilia | Institution | 34 |
University of Padua | Institution | 31 |
Research Square | Preprint | 29 |