Dependency

The rule script uses the value entered for this item in performing its calculations or edit checks. For the rule to run, this item and any items classified as applied dependencies must have an entered value.

In the following example, the Prior Weight rule compares the values of the Weight item in Visits 1 and 2 when the Vital Signs form in Visit 2 is submitted and issues a query on the item in Visit 2 if the rule fails. The rule runs only if both Weight items contain data.