TEG-Virginia, LLC


for clients career opportunities become an Epsilon investigator press releases Epsilon-assisted publications calendar of events Medical Automation Systems Medical Decisions Network Glycemic Control Diabetes Innovations continuous glucose-error grid analysis static glucose-error grid analysis services project management protocol design IT integration data management statistical analysis medical writing clinical use surveys & studies phase IV & V post-marketing research disease management point-of-care diagnostics benchmarking who we are our philosophy our staff
Continuous Glucose-Error Grid Analysis (CG-EGA)
A dynamic version of the Clarke error grid
Features	View A Demo	How To Order	References
The CG-EGA is a Windows-based, statistical program designed for use by the diabetes technology industry in the evaluation of continuous glucose monitoring devices. The CG-EGA is a logical extension of the original error grid analysis (EGA), which was developed for assessing the clinical accuracy of patient-determined blood glucose values using either estimation or self-monitoring blood glucose systems. The CG-EGA is based upon the premise that information being generated by a monitoring system should be reliable enough to result in clinically accurate decision making by the user. The CG-EGA was originally designed by Drs. William Clarke and Boris Kovatchev at the University of Virginia in Charlottesville, VA, USA and is now licensed to Epsilon for distribution.

Features - Back to Top

Data Management

Integrated spreadsheet with unlimited number of rows.
Correct handling of missing data.
Imports plain text format.

Documentation

Comprehensive electronic help file.
Technical Support Call Center

CG-EGA Analysis

Creates separate error grid zones for analyzing continuous glucose sensor (CGS) clinical accuracy in terms of rate and direction of blood glucose (BG) change.
Displays both point and rate accuracy in error matrices for determining the clinical accuracy of treatment decisions.
Evaluates the accuracy of CGSs separately for each of the following ranges:

Hypoglycemia (BG ≤ 70 mg/dL),
Euglycemia (70 mg/dL < BG ≤ 180 mg/dL), and
Hyperglycemia (BG > 180 mg/dL)

System Requirements

PC with Windows 2000® or XP®
64 Mb of memory

8 Mb free space on hard disk.

This is the exact output of the CG-EGA software. It is important to note that the output for the CG-EGA does not include any error grid graphs. This is the standard way of presenting the results of the CG-EGA. Unlike the traditional static Clarke Error Grid analysis, the results of the CG-EGA cannot be summarized in a single scatterplot.

How To Order- Back to Top

The price of one CG-EGA CD-ROM is $230 plus shipping. Please call +1.434.975.0097 or email gkongable@epsilongroup.com to place an order.

Click Here to View a Demo of the CG-EGA

References - Back to Top

Boris P. Kovatchev, Linda A. Gonder-Frederick, Daniel J. Cox, and William L. Clarke. Evaluating the Accuracy of Continuous Glucose-Monitoring Sensors: Continuous glucose-error grid analysis illustrated by TheraSense Freestyle Navigator data. Diabetes Care 2004;27:1922-1928.

"We uncover the evidence for evidence-based medicine"