Table 4.
Number of PubMed articles (1946-2021) with classified first-author affiliationsa.
| Affiliation group | PubMed articles, n (%) |
| University | 15,800 (73.3) |
| Government | 1928 (8.9) |
| Hospital | 1787 (8.3) |
| Miscellaneous | 953 (4.4) |
| Nonprofit organization | 695 (3.2) |
| Industry | 282 (1.3) |
| Prison | 220 (1) |
| Military | 164 (0.7) |
aIn cases where the first author had more than 1 affiliation listed (eg, a hospital and a university), this was counted as both a hospital and university affiliation unless the hospital was affiliated with the same university, in which case it was counted as 1 affiliation.