Table 2. The distribution and overall characteristics of biomedical open access journals between the Directory of Open Access Journals and the conventional biomedical databases.
| In DOAJ | Only in DOAJ | In both DOAJ and conventional biomedical databases | Only in conventional biomedical databases | In conventional biomedical databases | All open access journals | |
|---|---|---|---|---|---|---|
| Number of biomedical OA journals | 86.7 (2,804) | 24.9 (807) | 61.7 (1,997) | 13.3 (432) | 75.0 (2,429) | 100 (3,236) |
| English language journals | 88.7 (2,488) | 76.5 (617) | 93.7 (1,871) | 92.6 (400) | 93.5 (2,271) | 89.2 (2,888) |
| Received impact factor 2012 | 20.6 (579) | 0.1 (1) | 28.9 (578) | 12.3 (53) | 26.0 (631) | 19.5 (632) |
| Impact factor 2012 (median [interquartile range]) | 1.316 [0.619–2.456] | 0.372 [0.372-0.372] | 1.320 [0.619–2.458] | 0.994 [0.558–1.892] | 1.263 [0.615–2.426] | 1.257 [0.615–2.423] |
Notes.
Values are presented as % (n), if nothing else is noted.
Percentages in the first row are based on total number of journals included.
Percentages in all other rows are based on the number in journals in each group (i.e., the (n) of each columns first row).
- DOAJ
- Directory of Open Access Journals
- OA
- open access
Conventional biomedical databases include: MEDLINE, PubMed Central, EMBASE, SCOPUS and U.S. National Library of Medicine.