What is a PI?

The PI, or Principal Investigator, is the person who conducts the research study. The PI is also the person who is responsible for making sure everything is done properly. Along with the PI, there may be other persons who help with the study.  For example, if it is a medical study, there may be a nurse involved in conducting the study.  There are also people who look at all the data that is collected in the study and other individuals involved in operating the study.

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