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Published byHoratio Hamilton Modified over 9 years ago
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REDCap Introduction By J Kevan Essmyer Acknowledgements:
Paul Harris (Vanderbilt CTSA) Jack Baty (WUSM REDCap Admin)
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Overview What is it… Where is it… What are the costs…
REDCap Features (A brief tour of the system)… Getting Started (Creating a REDCap project)… Demonstration…
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Need for Data Capture Software
Convenient uniform data entry method Stateless web-based Secure WUSM HIPAA compliant centralized data store. Easy to use multi-purpose clinical database Not Excel, Not Access, Not 3-4 composition notebooks somewhere on the top shelf Reduce data “cleaning” effort during analysis.
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REDCap System (What is it?)
Easy to use, web based Research data capture system Metadata (Form) driven data store development Generic clinical data system with adaptable features covering Surveys, Cross-sectional, and longitudinal study models Provides data validation at time of entry, and user based data access restrictions. Provides easy mechanism to view and export data in a variety of formats for common analysis tools. Designed to be a self service tool
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WUSM REDCap Installation
Where is it
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REDCap Consortium
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WUSM REDCap Installation
Active installation since November 2009 Currently have users System hosted on local secure WU servers behind multiple firewalls Daily differential backup
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Biostatistics Secure Domain
Public HTTPS Survey Access Biostatistics Secure Domain WEB Server File Server REDCap Survey Uploaded Files MySQL Server Authenticated Access Data WEB Server Sync WU Campus Data Entry /Admin MySQL Slave Server Data Entry /Admin Sidedoor Server Installation Files Host Server
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WUSM REDCap Servers (http://www.biostat.wustl.edu/redcap)
Development “Trying it Out” HIPAA Secure server REDCap User Request form (Fax or ) Sponsoring PI Username /password Open access to the Development server Off-campus Access Sidedoor security certificate Access from any “capable” Internet connection (world wide) Production “Data Collection” REDCap Project Request form (Fax or ) Sponsoring PI IRB Approval or Waiver Only PI or Project Admin can create projects Production “Status” Data Dictionary Changes saved Review of submitted changes to avoid unintended data corruption Delete all records function disallowed
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Current Usage Costs Offered as an Investigator Resource for Washington University Institute of Clinical and Translational Sciences(ICTS) and Siteman Cancer Center (SCC) members. No charge for data or file storage. File size currently limited to 32MB per file No limit on the number of projects per study. Basic technical support and usage guidance provided by REDCap adminstators.
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REDCap Selected Features
A brief tour of the system REDCap Selected Features
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REDCap Features Calendar Scheduling tool
Online Graphical Form designer Multiple data types supported Built-in data validation for special text fields (phone, , SSN, numeric, …etc.) Branching Logic to conditionally show/hide fields Calculation Fields Configurable user permission levels Record Locking User grouping for multi-site data access restrictions Double Data Entry support Report Builder Graphical data viewing tool Simple data Import / Export mechanism Data quality query system for checking data integrity API interface for integration with other data systems. Detailed logging routines for monitoring data creation, modification, deletion and viewing. Integrated software instructions, FAQ, video tutorials. Curated Shared Forms Library Treatment Randomization Module
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Study Calendar – Participant Scheduling
Participant Scheduling Module Optional Visit-Level View Shows Status + CRFs (Longitudinal Model)
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Online Form Designer
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Field Types
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Textbox Data Validation
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Branching Logic Creation Tool
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Calculations Calculations are preformed on the web browser during data entry. Form must be submitted to saved in the project data. Calculated field should be considered a form tool. All calculations should be re-applied by statistical software during formal analysis/reporting phase.
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Calculations Simple [weight]*10000/([height]*[height]) Complex
Calculating the Mean of groups with null valid range includes zero The following equation will calculate the Mean of a list of variables ( (if(Math.abs([A])>0,[A],0)) +(if(Math.abs([B])>0,[B],0)) +(if(Math.abs([C])>0,[C],0)) ) / ( (if(Math.abs([A])>0,1,if([A]=0,1,0)) +if(Math.abs([B])>0,1,if([B]=0,1,0)) +if(Math.abs([C])>0,1,if([C]=0,1,0)) )
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Built in Functions DATEDIFF F(x) Units Date Formats
Type of calculation Notes / examples round(number,decimal places) Round roundup(number,decimal places) Round Up rounddown(number,decimal places) Round Down sqrt(number) Square Root (number)^(exponent) Exponents abs(number) Absolute Value min(number,number,...) Minimum max(number,number,...) Maximum mean(number,number,...) Mean median(number,number,...) Median sum(number,number,...) Sum stdev(number,number,...) Standard Deviation datediff([date1], [date2], "units", "dateformat", returnSignedValue) datediff([dob],[date_enrolled],"d") datediff([dob]," ","h","mdy",true) Units "y" years 1 year = days "M" months 1 month = days "d" days "h" hours "m" minutes "s" seconds "ymd" Y-M-D (default) "mdy" M-D-Y "dmy" D-M-Y Date Formats
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User Permissions “Rights”
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Record Locking Records can be lock by designated users to prevent further data entry change to specified forms ***WUSM Software installation is not currently configured for serving as a electronic source document system. (FDA 21 CFR Part 11 - Electronic Records compliant)
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Supporting Multi-Site
Data Access Group Partitions Double Data Entry Standard and modified usage Sidedoor Secure Server for External Campus access Configurable Individual “User Rights” Multiple access levels System Access –granted by the REDCap Administrators Project Access –granted by Project Administrator User Rights –set by Project Administrator
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Data Access Groups Partition data records among groups of users
Each group can only see the data associated with the group they belong to. Each user can only belong to one group “Global” users can be created for cross site management. (i.e. Any user not restricted to a Group)
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Creating Data Access Groups
Add Group to Study Add User to Group Only one Group per user
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Data Access Group Data Entry
Users only have access to their groups data. !!!Users Not assigned to a group have access to all records according to their “User Rights”!!! Multiple accounts available for Study Managers
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Double Data Entry Module
Standard method Supports only two data entry participants per REDCap Project Option for those creating individual project for each site Modified usage Create duplicate record with “comparison” or prefix/postfix Use comparison tool to compare records. Any user with data entry rights can do DDE
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Data Comparison Tools Use Case: Double-Data Entry Studies
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DDE Merge Tool
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Custom Reports End-User Creation/Use of Custom Reports
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Reports
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Data Visualization / Cleaning
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Data Export + De-ID Tools
Embedded De-Identification Tools Exports Raw Data + Stats Script Files (Labels, Coding
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Data Import Tools Use Cases: Convert DB to REDCap Batch Data Uploads
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Project File Repository
Project-Specific Files Uploaded Here Data Export Files Auto-Saved Project-Specific Files Downloaded Here
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Data Quality Module (Data Queries)
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Results
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Data Quality Module (data queries)
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Expanded API Functionality
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Audit Trails / Data Logging
Full Audit Logs – Data Changes and Page Views
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Top-Down and In-Line Video Training Resources
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Built-in User derived FAQ Resource
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Shared Library (Consortium)
Public Consortium Site Search Curated Instruments Scheduled for Release April, 2010 Annotated Records View as Web Page or PDF If coming from REDCap, May import to your study
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Treatment Randomization Module
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Creating a REDCap project
Getting StaRTed
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Getting Started Submit Request forms Create Project Create Forms
User , Project, and or Sidedoor “off -campus” access request forms Create Project Select Usage, Type, Data Model, and Scheduling option Create Forms Online designer to graphically create forms Spreadsheet template for advance and large form changes Forms per event designations User Rights Data access, Import/Export Rights, Data Access Groups Form level access Tests forms (Thorough testing will help avoid deployment delays) Move to Production “Status” Start Collecting Data.
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Project Creation Flow Chart
Create Project –Project Name, Longitudinal or Cross-Sectional/ Survey Move to Production Status and start Data Collection Excel Spreadsheet Or Online Form Designer Test Forms Define Study Events (Longitudinal) add Schedule (optional) Data Entry Forms Add Users and Set User Rights
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Web-Based Project Creation
Point/Click Drag (Ajax) For Real-time CRF Creation Longitudinal CRF Mapping Optional Participant Scheduling Setup Screens
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REDCap Setup Tools (Instantiate New Project ~ 15 sec)
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Project Setup Checklist
Provides a general to-do list during project creation Create hyperlinks to web pages or other REDCap projects All users permissions for data access configured here
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User Permissions “Rights”
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Online Form Designer First data element in the first form is consider the study ID Variable names must be in lower case and cannot be repeated in the data dictionary regardless of which form it is on.
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File-Based Project Creation
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Project Data Dictionary
Spreadsheet contains all the meta data necessary for REDCap to create data forms Quick transfer or modification of forms Moving forms between REDCap Servers Complicated Form modifications Adding or removing multiple fields Move fields from one form to another
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Forms Ready for Data
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REDCap CRF
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Move to Production Status
Production Status on the Production Server Data dictionary changes are stored by the system Global deletion of data from system prohibited Changes to forms must be approved by Administrators before they are committed to the project. Changes to the Forms/ Event Grid must be preformed by the Administrators.
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“?!!?” Branching Logic Data Validation User Rights API Data Dictionary
Scheduling Data Dictionary
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REDCap Lifelines Built-in tutorial videos
Built-in Frequently Asked Question (FAQ) guide Demonstration Databases (Some Online, more to come) WUSM Biostat REDCap Help Queue Monitored by 4 to 5 Administrators
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REDCap Support
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REDCap Goals Questions? Easy to use Metadata Driven Adaptable Features
Data entry validation Self service tool Questions?
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