REDCap OverviewInstitute for Clinical and Translational Science
Heath DavisFred McClurgBrian Finley
What is REDCap?
(Research Electronic Data Capture) is a web-based application used to create and manage databases and surveys in order to support data capture for research studies.
(Research Electronic Data Capture) is a web based application used to create and manage databases and surveys in order to support data capture for research studies.
What is REDCap?
3 Modes• Survey• Intended for a subject or participant• Can be anonymous• Data Capture • Intended for a research team member or
collaborator• Survey + Data capture combined
Who can use REDCap?
Any University of Iowa investigator or research team can use REDCap.
People use REDCap by logging into •https://redcap.icts.uiowa.edu/redcap/
Video training modules are available here:•https://redcap.icts.uiowa.edu/redcap/index.php?action=training
Why are people choosing REDCap over Excel and Access?• Access is authenticated• Using University of Iowa LDAP hawkId and password
• Secure hosting and regular data backups• Data backups, software grades, and system
maintenance are handled automatically by ICTS• More on security shortly
• Allows multi site access • research teams can input data simultaneously, from
across the hall or across the country
Why are people choosing REDCap over Excel and Access?• Research teams can quickly develop databases• Any user can login and start a project
• Research teams have autonomy• Creating a new database or survey• Assigning user permissions and roles• This should be in accordance with what is
submitted to the IRB• Granting rights for data import and export
REDCap Features• Form creation and data entry are easy in the web interface
REDCap Features
• Classic Data collection• Form(s) are intended to be used for 1 time
period (ask the questions once)
• Longitudinal • A form can be used for multiple time periods• Vitals at visit 1, 30 days, 60 days
• Better for consistency, only make an update once• Calendar for subject visits
REDCap Features
• Researchers can make modifications to their database at any time during the study• In draft mode• In production mode
• Questions using branching logic and calculated fields are supported• Researchers can copy databases• Researchers can clear all data from a database
REDCap Features
• Identified data • Research teams can easily mark
identified data in the interface and create access limits on those fields that include identifying information
REDCap Features
• Researchers choose what people and groups have access to:• Data export, both identified and de-
identified• Data export & import capability• User rights management• View reports• View logging• Data comparison
REDCap Features
• Reports can be:• generated on the fly • Any field can be included on a report
• saved and used over and over within the interface• limited to certain users
REDCap Features
• File Repository• Placing a project in production• file repository automatically snapshots your
data dictionary with each production change• Other project-specific files can be stored here• E.g. consent form template, SOP
• Files can be securely shared with project members and non project members• Via email and a token.
REDCap Features
• Graphics Data View & Stats
REDCap Features
• Data Comparison Tool• Used to compare two records in a project• Data Quality Tool• Missing Values • Validation Errors (incorrect or out of range)• Outliers • Hidden fields with values• Multiple choice fields with invalid data
REDCap Features
• Double Data Entry• Intended for 2 persons entering data from a
form• Each are independent• DDE1 and DDE2 roles are assigned to 2
different people• A reviewer reconciles• Reviewer role is assigned to a third person
• (need an admin to enable)
REDCap Features
• Parent Databases• Allows for a parent database with things
such as contact information and demographics information • Parents can have many children• Child databases • Child databases inherit information from parent
databases• Children have only 1 parent
• (need an admin to enable)
REDCap Features
• API • For web developers wanting to use REDCap• Allows external applications to connect to
REDCap• Used to retrieve or modify data and
settings in REDCap• e.g. data exports and data imports
• (need an admin to enable)
REDCap Features
• Researchers can export data to a variety of statistical analysis packages (SPSS, SAS, Stata, R or Excel)• Researchers can grant or restrict access to
export data for analysis• Data exports are customizable, including all
or some of the data forms and fields• Exports can include identified or only de-
identified data depending on user and group rights
REDCap Features
Data logging • provides information about •who has changed the instrument •who has changed the data•who has accessed data•when these events occurred
REDCap System Security
(This is what the IRB will want to know)•Physical Security• Primary Data – HCIS Pomerantz Data Center• Data backups – ITS Lindquist Data Center
•Operating System Security• HawkID-Based Logins• Data Encrypted at Rest• Remote System Logging• Configuration and Change Management
REDCap Data Backups• Backups are always • At rest --This means even the system admins who have
access to the hard drive are unable to read• On the fly – this means if someone where listening
to network transmission they would be unable to decipher the information
• Copies of data replicated to remote data center every 15 minutes• 100+ point in time copies of data available at any
time• Disaster recovery strategy has been tested without
data loss
Reminder
• Hands on training tomorrow http://www.icts.uiowa.edu/content/events/ • Newsletter Wiki Page:• https://www.icts.uiowa.edu/confluence/displa
y/ICTSit/REDCap+Newsletter• REDCap Documentation:• https://www.icts.uiowa.edu/confluence/displa
y/ICTSit/REDCap
Questions?
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