University of Southern Indiana
IRB Research Categories and Definitions


IRB Review Categories for Type 1 Research 

The 6 exempt research categories defined and explained.

IRB Review Categories for Type 2 Research

Explanations of the 7 expedited research categories.

Description of Vulnerable Populations

Differences between the 3 vulnerable populations and 2 protected populations.

Definition of Human Subjects Research

USI's definitions of 'human subjects' and 'research' to help determine if a protocol requires IRB review.

Definition of Secondary Data

USI's definitions of 'secondary data' and information to help researchers determine what research category their secondary data research project meets.

  • © 2014 University of Southern Indiana
  • 8600 University Blvd.
  • Evansville, IN 47712
  • 812-464-8600
Contact Emily Lynn
Send Email to