CRF Builder

Introduction to CRF Builder

From Checkpad's version Checkpad 1.3.2, we have provided a module called CRF Builder to create CRFs within the EDC platform to replace previous use of Excel files.

With CRF Builder, users can easily and intuitively build CRF files with a drag-and-drop interface and layout design that mimics the actual output. CRF builder also provides many extensive features that support users in creating a CRF. 

CRF Structure

To work with CRF Builder, one needs to understand the overall structure of a CRF.

A CRF includes the following objects:

• CRF Version:
  • Each CRF must have at least one version.
  • Other versions are usually created when users what to update a CRF in use or add options into a CRF.
  • Children: Section
• Section: 
  • Mainly used for the display purpose of splitting a CRF into multiple pages when viewing a CRF
  • Children: Group
• Group: 
  
  • Used to group items into logical groups for easy data handling and analyis
  • Only repeating groups appear upon display of form
  • Children: Row, Group
• Row: 
  • Only for display purpose to group items into a row upon display
  • Children: Item
• Item: 
  • Smallest unit of a CRF representing a field within the data form. 

Not all objects in a CRF Builder is used to store data. Some objects such as section or row are only used for display purposes. 

Example: The following diagram shows the relationship between objects of CRF builder and objects in ODM-CDISC data standard.