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Collective data for the articles provided for each journal type.
| Journal type | Journals with data | Total articles | Total citations | Mean citations per article | Mean articles per journal | Range of years of publication | Median year of article publication |
|---|---|---|---|---|---|---|---|
| Subscription | 8 | 69 | 19,522 | 282.9 | 8.625 | 1993–2019 | 2015 |
| Open access | 5 | 30 | 8031 | 267.7 | 6 | 1969–2019 | 2012 |
| Hybrid | 17 | 145 | 7858 | 54 | 8.529 | 2000–2020 | 2018 |
