TABLE I.
Article Characteristics
| Category | N | %* |
|---|---|---|
| Articles | 310 | |
| Year | ||
| 2017 | 46 | 14.8 |
| 2018 | 53 | 17.1 |
| 2019 | 56 | 18.1 |
| 2020 | 67 | 21.6 |
| 2021 | 88 | 28.4 |
| First author | ||
| HRP | 170 | 54.8 |
| LRP | 113 | 36.5 |
| Both | 27 | 8.7 |
| Last author | ||
| HRP | 200 | 64.5 |
| LRP | 87 | 28.1 |
| Both | 23 | 7.4 |
| Other authors | ||
| HRP | 25 | 8.1 |
| LRP | 33 | 10.7 |
| Both | 249 | 80.3 |
| N/A | 3 | 1.0 |
| Multicenter collaboration | ||
| Yes | 105 | 33.9 |
| No | 205 | 66.1 |
| Study type | ||
| Retrospective observational study | 64 | 20.7 |
| Prospective observational study | 62 | 20.0 |
| Cross-sectional study | 36 | 11.6 |
| Narrative review | 33 | 10.7 |
| Systematic review | 20 | 6.5 |
| Cross-sectional study | 16 | 5.2 |
| Consensus study | 11 | 3.6 |
| Randomized controlled trial | 11 | 3.6 |
| Case series | 9 | 2.9 |
| Economic analysis | 9 | 2.9 |
| Qualitative study | 9 | 2.9 |
| Validation study | 9 | 2.9 |
| Case-control study | 5 | 1.6 |
| Meta-analysis | 4 | 1.3 |
| Basic science | 3 | 1.0 |
| Other† | 9 | 2.9 |
*
Percent of the total articles (n = 310).
†
“Other” article types include commentary/letter to the editor, probability modeling, systems approach, mixed methods, and other special articles.