Table 5. Declaration of conflict of interest of authors, peer reviewers, and editors.
| Sample 1 12 | Sample 2 12 | |
|---|---|---|
| Authors reporting of COI | N = 144 | N = 115 |
| Reports absence of COI | 129 (89) | 79 (68) |
| Reports presence of COI (at least 1) | 13 (9) | 34 (30) |
| Does not report on COI | 2 (2) | 2 (2) |
| Peer reviewers’ reporting of COI | N = 330 | N = 263 |
| Reports absence of COI | 232 (70) | 175 (66) |
| Reports COI | 7 (2) 13 | 9 (4) 14 |
| Does not report on COI | 91 (28) | 79 (30) |
| Editor’s reporting of COI | N = 16 | N = 15 |
| Reports COI | 0 (0) | 0 (0) |
| Reports absence of COI | 0 (0) | 0 (0) |
| Does not report on COI | 16 (100) | 15 (100) |
12 sample 1 includes articles of any type of original research. Sample 2 is restricted to only randomized controlled trials (RCTs)
13 4/7 had Individual financial interests with direct financial benefit, 2/7 had Individual personal interests, 1/7 had Individual intellectual interests.
14 6/9 had Individual financial interests with direct financial benefit, 3/9 had Individual personal interests.