Strength of clinical evidence supporting the United States Food and Drug Administration Accelerated Approvals from 2015 to 2022

The number of drug-indication pairs receiving AA increased sharply during 2015-2016 to 2019-2020 but fell in 2021-2022. Meanwhile, the strength of clinical evidence supporting FDA's AAs appeared to decline from 2015 to 2020 but seems to have improved in 2021-2022. Measures should be taken to further improve the strength of evidence in Accelerated Approvals.