ArticleClinica chimica acta; international journal of clinical chemistry2008
Evaluation of point-of-care glucose testing accuracy using locally-smoothed median absolute difference curves.
Article in Clinica chimica acta; international journal of clinical chemistry, 2008. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers.
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Who cites it
13 citing papers in PubMed.
- Using geographic rescue time contours, point-of-care strategies, and spatial care paths to prepare island communities for global warming, rising oceans, and weather disasters.International journal of health geographics · 2023Article
- Utility of point-of-care vs reference laboratory testing for the evaluation of glucose levels.Diabetic medicine : a journal of the British Diabetic Association · 2019Article
- A Real-World Setting Study: Which Glucose Meter Could Be the Best for POCT Use? An Easy and Applicable Protocol During the Hospital Routine.Journal of diabetes science and technology · 2018Article
- Computing the surveillance error grid analysis: procedure and examples.Journal of diabetes science and technology · 2014Article
- Wavelength selection-based nonlinear calibration for transcutaneous blood glucose sensing using Raman spectroscopy.Journal of biomedical optics · 2011Article
- Accuracy and reliability of the Nova StatStrip® glucose meter for real-time blood glucose determinations during glucose clamp studies.Journal of diabetes science and technology · 2010Article
- Finger-stick glucose monitoring: issues of accuracy and specificity.Diabetes care · 2010Article
- Analytical and clinical performance of blood glucose monitors.Journal of diabetes science and technology · 2010Review
- A review of standards and statistics used to describe blood glucose monitor performance.Journal of diabetes science and technology · 2010Review
- Thermal stress and point-of-care testing performance: suitability of glucose test strips and blood gas cartridges for disaster response.Disaster medicine and public health preparedness · 2009Article
- Assessing the performance of handheld glucose testing for critical care.Diabetes technology & therapeutics · 2008Article
- Standardization, Harmonization, and Realization.Point of care · 2008Article
- Global Standardization and Improved Technologies for Point-of-Care Glucose Testing.Clinica chimica acta; international journal of clinical chemistry · 2008Article
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Abstract
backgroundWe introduce locally-smoothed (LS) median absolute difference (MAD) curves for the evaluation of hospital point-of-care (POC) glucose testing accuracy.
methodsArterial blood samples (613) were obtained from a university hospital blood gas laboratory. Four hospital glucose meter systems (GMS) were tested against the YSI 2300 glucose analyzer for paired reference observations. We made statistical comparisons using conventional methods (e.g., linear regression, mean absolute differences).
resultsDifference plots with superimposed ISO 15197 tolerance bands showed bias, scatter, heteroscedasticity, and erroneous results well. LS MAD curves readily revealed GMS accuracy patterns. Performance in hypoglycemic and hyperglycemic ranges erratically exceeded the recommended LS MAD error tolerance limit (5 mg/dl). Some systems showed acceptable (within LS MAD tolerance) or nearly acceptable performance in and around a tight glycemic control (TGC) interval of 80-110 mg/dl. Performance patterns varied in this interval, creating potential for discrepant therapeutic decisions.
conclusionsErroneous results demonstrated by ISO 15197-difference plots must be carefully considered. LS MAD curves draw on the unique human ability to recognize patterns quickly and discriminate accuracy visually. Performance standards should incorporate LS MAD curves and the recommended error tolerance limit of 5 mg/dl for hospital bedside glucose testing. Each GMS must be considered individually when assessing overall performance for therapeutic decision making in TGC.
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