Which of the following is NOT a criterion that the IRB must review according to the Common Rule?

The selection of target enrollment numbers is not explicitly listed as a criterion that the Institutional Review Board (IRB) must review under the Common Rule. The Common Rule emphasizes the need for the IRB to ensure that the risks to subjects are minimized, that the selection of subjects is equitable, and that there are additional protections for vulnerable populations. These elements are crucial for safeguarding participant rights and wellbeing during research.

While target enrollment numbers may be an important consideration for researchers in planning studies, they do not directly relate to the ethical protection of human subjects as outlined by the Common Rule. Therefore, the IRB focuses on aspects that are directly tied to participant safety and ethical considerations rather than logistical aspects like enrollment numbers.