Table 1:

Summary of rule conditions.

Condition	Description
TRUE	Rule always runs.
FALSE	Rule never runs.
NOT condition	Rule runs if condition is false.
condition AND condition	Only runs if both conditions are true.
condition OR condition	Runs if either condition is true.
NOTNULL(id)	Rule runs if the REDCap field is populated.
VALUE(id) op vaue	Runs depending on the evaluation of the REDCap field against the value based on the operator, op which can be =, ≠, <, >, ≤ or ≥.
RESOURCES EXIST(id1, id2, ...)	Rule runs if all the referenced resources exist.