Why does an expedited review take as long as a full review?

Why does an expedited review take as long as a full review?
‚ÄčThe term expedited review refers to the categories of research that may be reviewed through an expedited review procedure as outlined in the IRB's Policy and Procedure Manual. It does not refer to the length of time required for the review process.

Expedited review is applicable for research activities which involve no more than minimal risk to the human participants and which can be placed in one or more of the nine (9) categories. Categories one (1) through seven (7) pertain to both initial and continuing review. The definition of minimal risk for the purpose of IRB application is defined as the amount of risk encountered in daily life.