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Using REDCap to consent research participants

Writing or Signing on Digital Document Using Electronic Pad and Stylus Pen

Using REDCap to consent research participants

Obtaining written consent is a critical step in the clinical research process, but managing paper forms can be a major hassle. REDCap offers a digital method to acquire and store participant consent through a new e-Consent Framework and PDF Auto-Archiver.

What is e-Consent?

Electronic-Consent (e-Consent) is a platform for consenting research participants using a computer-based consent form rather than traditional paper documentation. REDCap now has a feature that implements consent forms through an online survey which can be accessed on a computer, mobile phone, or tablet.

Participants can ‘sign’ their consent by typing in their name or by utilizing REDCap’s ‘Signature’ field type on the survey. Please note that the signature process is NOT implemented by REDCap automatically; a survey must be constructed using one of these two methods in order to capture a signature.

How the e-Consent Framework works

The REDCap e-Consent Framework provides standardized tools to obtain consent and store consent documentation with a certification screen and a storage function which automatically generates a ‘hard-copy’ PDF of the signed form.

The ‘Auto-Archiver + e-Consent Framework’ survey option adds two things to the typical survey-taking process.

  1. Before a participant completes the survey, an extra certification page is added to the end of the survey that displays an in-line PDF copy of the document in which they will be asked to confirm that all information in the document is correct.
    • The survey will not be considered complete until they fulfill the certification step.
  2. Upon completion of the survey, a static copy of their responses in the form of a consent-specific PDF will be stored in the project’s File Repository.
    • The consent-specific PDF will have the values of the e-Consent Framework Options inserted at the bottom of each page in the PDF.
    • These values (i.e., name, date of birth, etc.) are added to the PDF as extra documentation of the identity of the person who is consenting.

Setting up e-consent

  1. Enable surveys on the “Project Setup” page.
  2. Set up a survey instrument with the consent language as well as first, last, signature, and a date validated field. Optional fields may be included, such as ‘date of birth’.
  3. Enable the consent instrument as a survey.
  4. If it is already enabled go into survey settings and turn on “auto-archiver + e-Consent Framework”.
    • A pop up will appear requesting first and last name variables as well as version number. *Versioning of a form is a concept whereby you may give it a number or alpha-numeric designation to represent the current version.
    • If the form is modified AFTER data collection begins, then it is recommended that a new version be applied. For example, the first version might simply be ‘1’, and after collecting the consent of a few participants, a question is modified or added, which represents a new version of the form, so you might increment the version to ‘2’ (and so forth).
  5. You can select the optional fields like date of birth or the e-consent type.
    *The e-Consent ‘type’ is another free-form text field that can be used to signify the type of e-Consent that this survey represents (e.g., pediatric). ‘Type’ is often used to distinguish between multiple e-Consent forms within a project.
  6. Finish up by clicking the “Save Changes” button.

*Consent version and type are both free-form text fields whose value will be inserted at the footer of each page in the PDF.

Setting up the Project

How participants use e-Consent

The participant will open the survey and read through the consent form. When they get to the bottom, they will have the opportunity to fill in their information and sign their name if they agree to participate. They will select “Next Page” and a read only copy of the consent will be generated that they can review, download, and/or print. At the bottom of the page they will need to select “I certify that all the information in the document above is correct, and I understand that signing this form electronically is the equivalent of signing a physical document.” Once this is selected they will be able to submit the survey.

A closer look at  the process

For more information, visit the e-Consent demo project to see an example of how this would work for the participant.

Where are completed PDFs stored?

The completed PDFs are in the File Repository under “PDF Survey Archive.” Files can be downloaded as individual records or bundles in a ZIP file. Note: only users with ‘Full data set’ data export privileges will be able to download the archived files. The e-Consent Framework also records the IP address of the participant and displays this information in the file repository in order to help regulate potential duplicate forms from a single IP address.

How to view/download completed PDFs



Cite ITHSThe Institute is supported by grants UL1 TR002319, KL2 TR002317, and TL1 TR002318 from the NIH National Center for Advancing Translational Sciences through the Clinical and Translational Science Awards Program (CTSA).

Please help us continue to support your research by citing our grant number(s) in publications we supported.