Table 2. General characteristics.
| Characteristic | N=248 |
|---|---|
| Impact factor of the journal, median (IQR) | 2.9 (1.6–4.4) |
| Journal type, n (%) | |
| Anesthesiology | 109.0 (44.0) |
| Orthopedics | 66.0 (26.6) |
| General medicine | 37.0 (14.9) |
| Other* | 36.0 (14.5) |
| Continent of trial conduct, n (%) | |
| Asia | 103.0 (41.5) |
| Europe | 65.0 (26.2) |
| North America | 43.0 (17.3) |
| Africa | 15.0 (6.0) |
| Multiple | 14.0 (5.6) |
| Australia | 7.0 (2.8) |
| South America | 1.0 (0.4) |
| Sample, median (IQR) | 65.0 (50.0–97.0) |
| Funding source, n (%) | |
| Self-funded/no outside funding | 85.0 (34.3) |
| Funding not reported | 66.0 (26.6) |
| Hospital | 43.0 (17.3) |
| Multiple funding types | 23.0 (9.3) |
| Government | 19.0 (7.7) |
| Non-profit | 6.0 (2.4) |
| Private/industry | 4.0 (1.6) |
| University | 2.0 (0.8) |
| Year, n (%) | |
| 2024 | 26.0 (10.5) |
| 2023 | 28.0 (11.3) |
| 2022 | 27.0 (10.9) |
| 2021 | 23.0 (9.3) |
| 2020 | 21.0 (8.5) |
| 2019 | 24.0 (9.7) |
| 2018 | 19.0 (7.7) |
| 2017 | 17.0 (6.9) |
| 2016 | 22.0 (8.9) |
| 2015 | 17.0 (6.9) |
| 2014 | 23.0 (9.3) |
| 2013 | 1.0 (0.4) |
*
The category ‘other’ consists of journals from the following disciplines: pain medicine, surgery, cardiovascular medicine, geriatrics, neurology, emergency medicine, environmental, healthcare sciences, multidisciplinary sciences, radiology, biochemistry, integrated and complementary medicine, oncology, otorhinolaryngology, pharmacy, and rheumatology.