Which item is not included in the Introduction content?

• A. The chemical name
• B. The active ingredients and pharmacological class
• C. The patient enrollment numbers
• D. The rationale for performing research and anticipated indications with the general approach

Answer: (C)

The Introduction of a protocol sets the stage with background, rationale, objectives, and information about the investigational product, including its identity, pharmacology, and the anticipated indications with the general approach to the research. The chemical name and the active ingredients with their pharmacological class fit here because they help explain why the study is being done and how the drug is expected to work. The rationale for performing the research and the overall approach to the indications are also described to justify the study.

Enrollment numbers, however, are specific planning details about how many participants will be enrolled and how the study will be conducted, which belong in the Methods/Study Design or Statistical Considerations sections. They are not part of the Introduction.