可以讀讀這篇文章

來源: 於 2020-05-22 13:22:25 [博客] [舊帖] [給我悄悄話] 本文已被閱讀：次

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3059315/

沒時間就讀2.1即可。

如果這也太多，就讀下麵一段。

"Despite the limitations, single-arm trials may be the only (or one of few) options for trials evaluating therapies for which placebos are not ethical and options for controlled trials are limited. Single-arm trials have been commonly implemented in oncology."