
Open Access statistics for International Initiative for Impact Evaluation, United States, covering academic research published from 2000 to 2025.
Open Access statistics for International Initiative for Impact Evaluation, United States, covering academic research published from 2000 to 2025. Read More.
Open Access Percentage
77%
Total
Publications
167
Total Open
Publications
129
Total
Citations
5.6K
Open Access
Percentage
77%
Total
Publications
167
Total Open
Publications
129
Total
Citations
5.6K
Breakdown
Publisher Open
11%
Both
38%
Other Platform Open
28%
Closed
23%
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 61%
48
Hybrid 25%
20
No Guarantees 14%
11
Other Platform Open
Institution 52%
56
Domain 47%
51
Other Internet 31%
33
Preprint 10%
11
Public 5%
5
Other Platform Locations
Name | Platform Type | Publications |
|---|---|---|
PubMed Central | Domain | 49 |
doaj.org OAI-PMH Repository | Institution | 38 |
DOI | Other Internet | 30 |
Unknown Repository | Other Internet | 5 |
Figshare | Public | 5 |
University of Bristol | Institution | 4 |
World Bank Group | Preprint | 3 |
Research Square | Preprint | 3 |
World Bank | Institution | 2 |
Royal Netherlands Academy of Arts and Sciences | Institution | 2 |