What is a critical item and why would I mark an item as critical?

A critical item is an item that you want to require source verification for, and that is designated as SV Required and critical during study design in Central Designer or by using the Partial SV settings in InForm to override the Central Designer setting. Using the Partial SV configuration settings, you can override the study design settings to mark an item as critical for all forms or a subset or forms, and all subjects or a subset of subjects.

Because an item is already considered critical if it's on a critical form, or is associated with a subject whose data is required to be source verified, you only need to explicitly mark an item as critical if it wouldn't otherwise be source verified.

You might mark an item as critical if it's only used on a form that is not critical, and is used by an excluded subject, which means that it would not be source verified unless you made it critical.