Characteristics of systematic review authors (n=655)
| Accuracy of author COI disclosure statement (n=655) | Reported conflict of interest (COI) | 103 (81.1) |
| Undisclosed FCOI found on open payments database | 10 (7.9) | |
| Undisclosed FCOI found on docs for profs | 1 (0.8) | |
| Undisclosed FCOI found by patents | 3 (2.4) | |
| Undisclosed FCOI found on PubMed | 71 (55.9) | |
| Additional FCOI besides what is already declared | 20 (15.7) | |
| Country of affiliation for authors conducting the systematic review (n=655) | USA | 276 (42.1) |
| UK | 116 (17.7) | |
| Canada | 69 (10.5) | |
| Australia | 61 (9.3) | |
| India | 17 (2.6) | |
| Netherlands | 16 (2.4) | |
| Germany | 15 (2.3) | |
| China | 13 (2.0) | |
| Ireland | 11 (1.7) | |
| Malaysia | 11 (1.7) | |
| Switzerland | 9 (1.4) | |
| France | 7 (1.1) | |
| Belgium | 6 (0.9) | |
| Spain | 6 (0.9) | |
| Other | 22 (3.4) |