REDCap OverviewInstitute for Clinical and Translational Science

Fred McClurgNeil Nuehring

What is REDCap?

REDCap (Research Electronic Data Capture) is a web-based application used to create forms and manage databases in order to support data capture and surveys 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.

REDCap Form Types

• Survey Intended for a subject or participant Can be anonymous

•Data Capture Intended for a research team member

or collaborator

Who can use REDCap?

Any University of Iowa investigator or research team can use REDCap.

You can log into REDCap via:https://redcap.icts.uiowa.edu

Video training modules are available via:https://redcap.icts.uiowa.edu/redcap/index.php?action=training

Why choose REDCapover Excel and Access?

• Access to REDCap is authenticated Uses University of Iowa LDAP HawkID and password

• Secure hosting and regular data backups Data backups, software upgrades, and system

maintenance are handled automatically by ICTS Data is secured via SSL

• Allows multi-site access Research teams can input data simultaneously, from

across the hall or across the country

Additional reasons why to choose REDCap over Excel and Access

Researchers can build databases rapidly Any user can login and start a project

Research teams have autonomy Create a new database or survey Assign user permissions and roles to others

(done in accordance with the IRB) Granting rights for data import and export

REDCap Web InterfaceForm creation and data entry are easy in the web interface

REDCap Data Collection

• Classic Data Collection Form used for a single time period

(questions asked once)

• Longitudinal Data Collection Form used for multiple time periods (e.g.

vitals at initial visit, 30 days, 60 days, etc.) Same form used for all time periods Calendar used to schedule subject visits

REDCap Features

o Branching logic is supportedo Calculated fields are supportedo Researchers can copy projectso Researchers can make modifications to

their project any time during the study Draft mode (design phase) Production mode (data collection phase)

REDCap Confidential Data

Identified data • Identified data can be selected in

REDCap to create access limits on those fields•What are identifiers? Examples: MRN,

Name, Social Security Number, etc.

REDCap Access Control

Researchers choose which individuals have access to what features:• Identified data (Team Members)• De-identified data (Data Analyst)• Data export (Principal Investigator)• Import capability (Data Entry)• User rights (Project Owner)• View reports (Project Manager)• View logging (Auditor)• Data quality (Quality Control)

REDCap Report Generation

Reports are:• Easy to generate

Any field can be specified as a report column Sort order and column order specified Simple filtering (e.g. males > age 21)

• Saved and recalled later• Can be limited to certain users• Often used as an interface for accessing

individual records

REDCap File Sharing

File Repository• Project-specific files can be stored here

Consent form template Standard Operating Procedure (SOP) No need for shared network drive

• Files can be securely shared with project members and non project members Via REDCap login (members) Via email and a token (non-members)

REDCap Graphing

Graphics Data View & Stats

REDCap Data Quality Control

• 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• Two persons perform data entry• Each data entry is independent

DDE1 and DDE2 roles are assigned to different individuals

• A reviewer reconciles differencesReviewer role is assigned to a third person

• An admin must to enable capability

REDCap Extensions• API

Allows external applications to connect to REDCap Used to retrieve or modify data in REDCap (via data export

and import) Admin needs to enable

• Plugins For web developers to extend REDCap functionality.

• Dynamic Data Pull (DDP) Integrated solution for retrieving data from external sources

(e.g. Epic’s Clarity database) into a REDCap project.

REDCap Analysis

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 Auditing

Data logging records information:•Who changed the data•What data was accessed•When these events occurred

REDCap System Security

Things 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 on the hard drive

REDCap Data Backups• Backups are encrypted …• Via the disk. Even the system admins who have access

to the hard drive are unable to read it.• Via the network. 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 Lab Training tomorrow:http://www.icts.uiowa.edu/content/events

• Newsletter wiki page:https://www.icts.uiowa.edu/confluence/display/REDCapDocs/REDCap+Newsletter

• Internal REDCap documentation:https://www.icts.uiowa.edu/confluence/display/REDCapDocs/REDCap

Questions?