To Edit Study Settings:

  1. To the right of Study Settings, click Edit.
    1. The Study ID field has a limit of 30 characters.
  2. Edit the study settings as needed, and click Save.

Note: The changes take effect immediately in both the Test and Production environments for that study.

Adding and Editing Participant IDs

Participant IDs can be created with:

  • Manual Entry: The user must enter the ID for each Participant.
  • System-generated: The system will auto-generate the ID based on an ID Template that you specify.

To Change the Method of Creation to Allow Automatic Entry:

  1. From the My Studies screen, click the Settings (gear) icon under the study name, and select Settings.
  2. Click the Edit link next to the Participant ID Settings header.
  3. Click the radio button next to System-generated.

Note: If Method of Creation is set to System-generated, only Data Managers can edit the Participant ID. Data Managers can always edit IDs, even ones that are system-generated.

System Generated IDs

If you choose System-generated, you must specify the template for the system-generated ID.

You Can Generate Participant IDs by the Following Methods:

  • The Participant Count Method: Generate Participant IDs sequentially.
  • The Random Number Method: Generate Participant IDs using random numbers.

You Can Build Your ID Template Using One or More of the Following Components:

  1. ${siteId}: The unique identifier for the site the Participant is being added to.
  2. ${siteParticipantCount}: The current number of Participants at the site. This is generally used like ${(siteParticipantCount+1)} to have the ID increment the Participant count for each new Participant added.
  3. ${helper.random(n)}: Generates a random number with up to n digits each time a Participant ID is generated.
  4. ?string[000]: Added to the resulting values to pad them with leading zeros to equal the number of digits specified, for example, ${(siteParticipantCount+1)?string[000]} or ${(helper.random(5))?string[00000]}.
  5. Prefixes, suffixes, separators – Include other text (such as or a Study-specific prefix) to include standard content in each ID.

Note: Each ID Template must include #2 or #3.

Examples: The Participant Count Method template, ${siteId}-${(siteParticipantCount+1)?string[000]}, for site University Hospital (Site ID = UH) would produce the IDs, UH-001, UH-002, UH-003, etc. For site Central Hospital (Site ID = CH) would produce CH-001, CH-002, CH-003, etc.

The Random Number Method template, P-${(helper.random(5))?string[00000]}, would produce IDs with a fixed prefix of P- followed by a 5-digit random number (including leading zeros), for example P-00362, P-82394, P-35070.

Notes About the Template:

  • The template cannot exceed 255 characters, and the resulting Participant ID cannot exceed 30 characters.
  • ${siteId} and ${siteParticipantCount} are both required but can be in any order.
  • Static text can be added to any portion of the template, but cannot include the following characters:
    • Slash (/)
    • Backslash (\)
    • Less Than (<)
    • Greater Than (>)
    • Ampersand (&)
    • Quotation Marks {“)
    • Apostrophe (‘)

Best Practice: There is no restriction for going beyond the minimum, but it is best practice to set up the minimum length to match the length of the maximum number of expected Participants.

If the template is invalid for any reason, the system uses a default template of ${siteOID} followed by a dash and a six-digit random number.