The Diabetes Technology Society Error Grid and Trend Accuracy Matrix for Glucose Monitors.
Creators: name: Klonoff, David C
name: Mehta, Chhavi
name: Worth, Chris
name: Blanchette, Julia E
name: Espinoza, Juan
name: Bauer, Elizabeth M
name: Dungan, Kathleen
name: Kovatchev, Boris P
name: Fabris, Chiara
name: Agus, Michael S D
name: Krouwer, Jan S
name: Moon, Sun-Joon
name: Pleus, Stefan
name: Spanakis, Elias K
name: Pfützner, Andreas
name: Adler, Amanda
name: Galindo, Rodolfo J
name: Spartano, Nicole L
name: Y Chen, Kong
name: Peters, Anne L
name: Cengiz, Eda
name: Sabharwal, Ashutosh
name: Koliwad, Suneil K
name: Rhee, Sang Youl
name: Wu, Alan H B
name: Voglová Hagerf, Barbora
name: Nichols, James H
name: Shah, Viral N
name: Sode, Koji
name: Bannuru, Raveendhara R
name: Dhatariya, Ketan K
name: Vareth, Maryam
name: Al-Sofiani, Mohammed E
name: Mader, Julia K
name: Cherñavvsky, Daniel
name: Maran, Alberto
name: Sheng, Bin
name: Joshi, Shashank R
name: Yeshiwas, Sewagegn
name: Wright, Eugene
name: Jacobs, Peter G
name: Mathioudakis, Nestoras
name: Aktürk, Halis Kaan
name: Heinemann, Lutz
name: Aaron, Rachel E
name: McShane, Michael
name: Waki, Kayo
name: Sacks, David B
name: Ejskjaer, Niels
name: Li, Chengdong
name: Rutledge, Keetan
name: Tse, Chui Cindy
name: Ho, Cindy N
name: Tian, Tiffany
name: Leiter, Lawrence A
name: Ayers, Alessandra T
name: Bee, Yong Mong
name: Gabbay, Monica A L
name: Kohn, Michael A
name: Fleming, G Alexander
name: Pasquel, Francisco J
name: Misra, Shivani
name: Kerr, David
name: Baker, Matt
name: Pop-Busui, Rodica
name: Seley, Jane Jeffrie
name: Lee, Wei-An Andy
name: Gómez-Medina, Ana María
name: Umpierrez, Guillermo E
name: Ahn, David T
name: Simonson, Gregg D
name: Cote, Gerard L
name: Chase, James Geoffrey
name: Lind, Marcus
name: Lal, Rayhan A
name: O'Neal, David N
name: Schwaighofer, Simon M
name: Tran, Nam K
name: Ranjitkar, Pratistha
name: Bally, Lia
name: Bailey, Timothy S
name: Hoang, Thanh
name: Wang, Jing
name: Clements, Mark
name: Hussain, Sufyan
name: Masharani, Umesh
name: Zilbermint, Mihail
name: Rhee, Connie M
name: Schmidt, Signe
name: Hermanns, Norbert
name: Drincic, Andjela
name: Freckmann, Guido
name: Vesper, Hubert W
name: Jendle, Johan
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2024

description: INTRODUCTION: An error grid compares measured versus reference glucose concentrations to assign clinical risk values to observed errors. Widely used error grids for blood glucose monitors (BGMs) have limited value because they do not also reflect clinical accuracy of continuous glucose monitors (CGMs).
METHODS: Diabetes Technology Society (DTS) convened 89 international experts in glucose monitoring to (1) smooth the borders of the Surveillance Error Grid (SEG) zones and create a user-friendly tool-the DTS Error Grid; (2) define five risk zones of clinical point accuracy (A-E) to be identical for BGMs and CGMs; (3) determine a relationship between DTS Error Grid percent in Zone A and mean absolute relative difference (MARD) from analyzing 22 BGM and nine CGM accuracy studies; and (4) create trend risk categories (1-5) for CGM trend accuracy.
RESULTS: The DTS Error Grid for point accuracy contains five risk zones (A-E) with straight-line borders that can be applied to both BGM and CGM accuracy data. In a data set combining point accuracy data from 18 BGMs, 2.6% of total data pairs equally moved from Zones A to B and vice versa (SEG compared with DTS Error Grid). For every 1% increase in percent data in Zone A, the MARD decreased by approximately 0.33%. We also created a DTS Trend Accuracy Matrix with five trend risk categories (1-5) for CGM-reported trend indicators compared with reference trends calculated from reference glucose.
CONCLUSION: The DTS Error Grid combines contemporary clinician input regarding clinical point accuracy for BGMs and CGMs. The DTS Trend Accuracy Matrix assesses accuracy of CGM trend indicators.