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Statistical methods (linear regression, correlation analysis, etc.) are frequently employed in comparing methods in the central laboratory (CL). Assessing acceptability of point of care testing (POCT) equipment, however, is more difficult because statistically significant biases may not have an impact on clinical care. We showed how error grid (EG) analysis can be used to evaluate POCT PT INR with...
A revised ISO guideline was recently published that recommended methods to assess the quality of point-of-care INR measures. We assessed the relative performance of the ISO methods and a method that we developed.We compared the ability of the ISO and the Shermock methods to predict when the INR measures lead to identical or different clinical decisions. Clinical decisions that were directly measured...
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