標題: Accuracy of the EasyTouch blood glucose self-monitoring system: a study of 516 cases
作者: Dai, KS
Tai, DY
Ho, P
Chen, CC
Peng, WC
Chen, ST
Hsu, CC
Liu, YP
Hsieh, HC
Yang, CC
Tsai, MC
Mao, SJT
生物科技學系
Department of Biological Science and Technology
關鍵字: diabetes mellitus;glucose self-monitoring system;Clarke Error Grid analysis;home testing;point-of-care testing
公開日期: 1-Nov-2004
摘要: Background: Self-monitoring blood glucose device is an important toot for diabetes patients to efficiently control their blood glucose concentrations. We evaluated the accuracy of EasyTouch glucose monitoring system. Methods: Capillary blood glucose concentrations measured using EasyTouch and the reference values obtained from Yellow Springs Instruments (YSI) 2300 STAT were performed in the Department of Laboratory Medicine, Wei-Gong Memorial Hospital. Results were evaluated using (1) linear regression analysis, (2) Clarke Error Grid analysis, (3) percentage of readings within a defined range of deviation from the reference value, (4) bias plots, and (5) coefficients of variation (CVs) calculated from 60 measurements in series. Results: The window of the 516 EasyTouch readings covered a range from 42 to 555 mg/dl. Linear regression analysis yielded a regression slope 0.9972, intercept 1.899 mg/dl, r(2) 0.9571, and Syx 14.89 mg/dl. A Clarke Error Grid analysis showed 100% of the EasyTouch readings in clinically acceptable zones A and B. Of the EasyTouch readings, 98.3%, 91.9%, 78.3% and 46.9% were found within +/-20%, +/-15%, +/-10%, and +/-5%, respectively, of the reference values. Further analysis showed that the percentage of EasyTouch readings within the defined intervals was similar in three glucose ranges (less than or equal to100, 101-200, and greater than or equal to201 mg/dl). The CVs for the four lots of strips (lot 1 to lot 4) ranged from 3.5 to 5.5%, 2.1 to 4.8%, 1.8 to 3.6%, and 3.0 to 5.7%, respectively. Conclusions: EasyTouch provides high accurate and precise glucose readings over a wide range of glucose concentrations. (C) 2004 Elsevier B.V. All rights reserved.
URI: http://dx.doi.org/10.1016/j.cccn.2004.06.010
http://hdl.handle.net/11536/25690
ISSN: 0009-8981
DOI: 10.1016/j.cccn.2004.06.010
期刊: CLINICA CHIMICA ACTA
Volume: 349
Issue: 1-2
起始頁: 135
結束頁: 141
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