Why the study?
Does external quality assessment identify significant deviations in INR measurements by patient-owned CoaguChek monitors?
Population
523 CoaguChek monitors brought by patients to nine clinics
Comparison
External quality assessment using the ECAA/ECAT… vs Certified INR values
Design
Cross-sectional
Authors
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External quality assessment detects INR deviations in patient CoaguChek monitors; leaves open whether routine checks improve VKA outcomes.
Does external quality assessment identify significant deviations in INR measurements by patient-owned CoaguChek monitors?
Regular external quality assessment of point-of-care CoaguChek monitors is essential, as over 20% of patient monitors showed significant deviations from certified INR values.
Besselaar et al. (2010) studied this question.
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