REDCAP OVERVIEW 
Research Electronic Data Capture 
Prepared by Angela Juan 
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What is REDCap ?  
REDCap (Research Electronic Data Capture) is a 
browser-based, data-driven software solution for 
designing and building clinical and research databases. 
The REDCap application allows users to build and 
manage online surveys and databases quickly and 
securely. 
Data entry operators enter data in a web browser, either 
locally or from remote locations. The data is stored in a 
secure database. 
The REDCap Consortium supports this secure web 
application. 
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Process to collect data in REDCap 
1. Create project 
2. Build data collection instrument 
a. Online designer 
b. Data dictionary 
3. Preview your data form or survey 
4. Enter practice data 
5. Test applications : data export, data comparison,  
graphic data view and report builder 
6. Modify project  
7. Move to production mode to capture real data 
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How to manage your projects in REDCap 
(1)My Projects : summary of all projects and details 
(2)Project Home and Project Setup 
1. When you click on one project in the lists of My Projects page 
2. Left side menu (project setup, data collection and applications). 
3. Right side main working page 
4. Project Home : Quick tasks 
5. Project Setup:  
(a) Main project settings 
(b) Design your data collection instruments and enable survey 
(c) Customization : auto-numbering for records 
(d) Move your project to production 
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Development mode and production mode 
1. Development mode means that you are still building and testing your 
project. 
2. In development mode, test all aspects of your project. Changes will happen 
immediately, allowing you to quickly and interactively refine your data 
collection instruments. 
3. When you have done all the tests in the development mode, your project 
should be moved to production mode. 
4. Once you are in production mode, all the practice data entered in 
development mode would be deleted.  
5. In production mode, adding new forms/fields is typically safe and will not 
affect any saved data. 
6. In production mode , problems typically occur when changing variable 
names, coding, and field types. These changes will likely result in data loss. 
7. Changes in the production mode needs to be approved by your local 
REDCap administrator. 
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Type of projects 
1. Single survey 
2. Data entry form  
a. classic 
(single data entry form enter single time) 
b. longitudinal 
(single data entry form enter multiple times at different   
time point). i.e. medical study with repeated measures. 
3. Single survey + Data entry form 
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Single survey: 
1.
Use REDCap to create a secure public webpage for 
collecting your project data. 
2.
Send the project link to your respondents. 
3.
Respondents do not need the login account to 
REDCap. 
4.
Respondents go to the webpage (the webpage URL is 
sent to their email box) and submit their data  directly to 
your REDCap project. 
5.
Login to your project to view and analyze their data 
Data entry form: 
1. Use REDCap to create your data collection 
instruments. 
2. Enter data directly into REDCap. 
3. Users need login account to access REDCap. 
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