Implications of clearing data

The following table describes what happens when you clear data from a form.

Affected area	What happens when you clear an item
Queries on a cleared item.	In a regular CRF with no itemsets, the following status changes occur: An Automatic query is changed to Closed. For manual queries: An Opened query is changed to Answered. A Candidate query is purged. Other queries are unchanged. In a CRF with itemsets, queries on an itemset are treated as if the itemset were one item, and the same status changes occur as for an item.
Itemsets.	If an itemset has been deleted, the deleted data is cleared. The audit trail records two entries indicating that the data was deleted and then cleared.
Calculated control.	The value of the calculated control is cleared if the calculated control depends on the cleared item.
CDD mapping for a cleared item.	The value mapped to the CDD is cleared along with the value of the cleared item.
Patient number.	After a Patient Number is entered, it cannot be cleared.
Randomization number.	After a Randomization Number is calculated, it cannot be cleared.