Characteristics of assessed protocols | Total | |
---|---|---|
N (101) | % | |
Journal | ||
Annals of Translational Medicine | 1 | 1.0 |
BMC umbrella journals | 23 | 22.7 |
BMJ Open | 15 | 14.8 |
Clinical and Translational Allergy | 1 | 1.0 |
Contemporary Clinical Trials | 4 | 4.0 |
Danish Medical Journal | 1 | 1.0 |
Implementation Science: IS | 1 | 1.0 |
JAMA Surgery | 1 | 1.0 |
JMIR Research Protocols | 2 | 2.0 |
Journal of Advanced Nursing | 3 | 3.0 |
Journal of Diabetes Science and Technology | 1 | 1.0 |
Nutrients | 1 | 1.0 |
Reproductive Health | 1 | 1.0 |
Springer Plus | 1 | 1.0 |
The Journal of Cardiovascular Nursing | 1 | 1.0 |
Trials | 44 | 43.5 |
Subject | ||
Behavioural | 49 | 48.5 |
Biological or vaccine | 1 | 1.0 |
Dietary supplement | 6 | 5.9 |
Drugs | 18 | 17.8 |
Surgery or procedure | 14 | 13.9 |
Other | 13 | 12.9 |
No. centres (according to authors’ affiliations) | ||
Multi-centre | 85 | 84.2 |
Single-centre | 16 | 15.8 |
Continent of authorship | ||
America | 19 | 18.8 |
Europe | 55 | 54.5 |
Asia and other | 27 | 26.7 |
No. sites (based on trial conduct) | ||
Multiple | 52 | 51.5 |
Single | 49 | 48.5 |
Trial design | ||
Parallel | 74 | 73.3 |
Cluster | 10 | 9.9 |
Non-inferiority | 5 | 5.0 |
Superiority | 2 | 2.0 |
Other (or mixed-type designs) | 10 | 9.8 |
Type of funding | ||
Non-industry | 83 | 82.2 |
Part industry | 5 | 4.0 |
Industry | 7 | 6.9 |
None/unknown | 6 | 5.9 |
Conflict of interest | ||
No | 77 | 76.2 |
Yes | 19 | 18.8 |
Not described | 4 | 4.0 |
Unclear | 1 | 1.0 |
Data sharing | ||
Data upon request | 7 | 7.0 |
Data stored in central repository | 1 | 1.0 |
No information provided | 93 | 92.0 |
Total | 101 | 100.0 |