Special field types

Castor has three special fields that can be used to help structure the CRF, to show the value of completed fields or to perform calculations using existing data.
A remark field is essentially a header or a line of text for your users to see and does not require an answer from the user.
In my step, a group of questions is related to Informed Consent
I can add a remark field to separate this section from other questions
A summary field summarizes data that’s already present in the CRF
For example, during the inclusion phase, the patient’s recorded weight is added
We can reference this value in other phase or step
To do that choose a summary field from the panel on the right
In the ‘summary/calculation template’ add a variable enclosed in the curly brackets, or braces.
Once the value is added to the original field, you will be able to see it in the summary field later in the form
If the original value is changed, the value will be updated in the summary field
A calculation field allows you to make advanced calculations on data that is present in the CRF
For example, a calculation field can be used to calculate the BMI automatically using the entered values for two variables: weight and height
To create a calculation field, click on the calculation field in the right panel, and using JavaScript syntax, create a template in the calculation field
In our helpdesk you can find various templates for you to use.
I would like to calculate patient’s age at the moment of the visit
Create a calculation field, add label and variable name
To calculate the difference between two dates, I am using a template from the helpdesk article, which is copied into my field.
The calculation template is added to the field ‘summary/calculation template’
Next, we should replace the variable names with our own study variables.
When I enter the assessment date and the patient’s birth year, the patient’s age at the moment of the visit will automatically be calculated.
JavaScript offers a lot of flexibility in performing various calculations
You can find templates and more information on these fields in the online user manual.