When can I mark a form item as read-only?

You can mark a form item as read-only whenever you want to display a value that is automatically generated by the system. By default, when you create a read-only item you don't allow manual data entry for that item.

What are the most common use cases for creating a read-only item?

• Calculated values: Mark an item as read-only when you want to display a value that is automatically calculated by the system. For instance, the Body Mass Index (BMI) can be calculated automatically based on a subject's height and weight. Also, the Age can be calculated based on the date of birth entered by the site user.
• Lab data: Mark an item as read-only when you want to display lab data that is automatically extracted from the system. For instance, blood test results can be automatically populated in a form. If you use a third-party system to collect and store lab data, you can still send the data to Oracle Clinical One Platform and populate read-only fields by using REST APIs.
• Coding items coming from drug/medical dictionaries: Mark an item as read-only when the value is received from a Coding application. Coding questions allow you to collect and map different types of data such as adverse events or concomitant medications, according to the terminology listed in dictionaries in Oracle Central Coding. For example, you can create an editable item for the symptoms subjects experience while taking a specific medication and read-only items for the terms returned from the Coding application. If a site user lists "splitting headache" as a subject's symptom after consuming Ibuprofen, the coding feature will translate the symptom as "severe headache" and populate the read-only field with the coded medical term.