Once your structure is created (sections and sub-sections), you can start adding questions to your forms. Questions are the building blocks of your eCRF, ePRO, eConsent, Recruitment, and Subject Database.
You can add a question by clicking Add Question in the Builder. Simply choose the type you need, and it will appear in your form. You can also drag and drop questions to reorganize your form.
💡Tip: Each question requires a Title, a Variable (used in exports), and a Question Type. You can also add a description and choose whether it is mandatory.
Types of blocks
You can choose from three main blocks:
Questions → Collect answers (text, number, date, multiple choice, etc.)
Static content → Display information only (instructions, headers, images)
Other blocks → Add complexity (repeated measures, templates, ePRO invitation)
Common question types
Here are the most frequently used question types:
Text
Collects free text (up to 2000 characters).
Radio buttons (single choice)
Let users select one answer from up to 20 options.
You can define labels and values, or let the system auto-generate values.
💡Tip: Optionally add an “Other” field for free text.
Checkbox (multiple choice)
Allow several answers to be selected.
Optionally add an “Other” field for free text.
Date / Time
Collect date, time, or both.
Variants: Year only, Year + Month, or Switchable/Partial dates (useful when participants don’t remember the exact date).
🛠️ Step-by-step guides
Year only
Year only
This works the same as the question type above. Only, here you have to tick a different box: "Year"
Year and month
Year and month
Same question type here. You just have to select another box to tick: "Year and Month".
Switchable Dates or Partial Dates
Switchable Dates or Partial Dates
Use the switchable dates when you want to collect a complete or uncompleted date.
It can be particularly useful when you ask when treatment began. Some patients only remember the year while others remember the exact date.
You have to tick: "Switchable Date"
Number
Enter integers or decimals.
Define the number of decimals (e.g. 2 decimals → 13.55).
Dropdown
Display a list of options; only one can be selected.
Slider
Collect a value on a scale with a minimum, maximum, and increment (e.g. 0.01).
Rating
A scale from 0 to 10 (min/max can be customized).
File upload
Allow participants to upload up to 5 files per question.
Supports video formats.
Calculated fields
Perform automatic calculations based on other variables.
Operators available: +, -, *, /, ^, ().
Examples:
BMI →
{WEIGHT}/{HEIGHT}^2Age → link to birthdate question and auto-calculate age.
Date/Time offset → add days/hours/minutes to a reference question.
Date/Time: Select "Calculate Date/Time".
Use the dropdown to link the reference question and add days, hours, or minutes.
The calculus is automatically set and displayed in the eCRF.
Static content types
Instruction
Add guidance or explanations to your form.
Instruction (in builder)
Instruction (in builder)
Instruction (in form)
Instruction (in form)
💡 Tip: For questionnaires sent directly to participants (ePRO, eConsent, Recruitment, Subject Database), always use Instruction blocks to provide context and clear guidance.
Header
Insert titles or subtitles to structure your form.
Image
Display an image. Images are zoomable when opened.
Other blocks
Repeated Measures
Repeat the same form (e.g. Adverse Events, Treatments) up to 20 times.
Limit how many repeats a participant can open.
Each new measure opens in a modal window.
ePRO invitation
Trigger an ePRO invitation directly from your form.
Add from template
Reuse predefined sets of questions to save time.