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Basic characteristics of trials
| Basic characteristics | No. of studies (n = 1000) |
|---|---|
| Type of design | |
| RCTs | 500(50.0%) |
| Others | 500(50.0%) |
| Year of retraction | |
| Before 2010 | 364 (36.4%) |
| 2011—2019 | 487 (48.7%) |
| After 2019 | 149 (14.9%) |
| Year of publication | |
| Before 2010 | 93 (9.3%) |
| 2011—2019 | 547 (54.7%) |
| After 2019 | 360 (36.0%) |
