منابع مشابه
Understanding Bland Altman analysis
In a contemporary clinical laboratory it is very common to have to assess the agreement between two quantitative methods of measurement. The correct statistical approach to assess this degree of agreement is not obvious. Correlation and regression studies are frequently proposed. However, correlation studies the relationship between one variable and another, not the differences, and it is not r...
متن کاملValidating the Bland-Altman Method of Agreement
Bland-Altman’s analysis and plot are the most common methods used to assess the relative agreement between two analytical methods that measure the continuous variables measured on the same scale. Many agreement studies have shown that using the t-test or the Pearson’s product-moment correlation is flawed when measuring the agreement or detecting the bias. Bland-Altman proposed graphical techniq...
متن کاملInterpreting the results of a Bland Altman method
When developing a new method to measure the concentration or the quantity of an element (molecule, micro organism, ...) you might want to check whether it gives results that are similar to a reference or comparative method or not. If there is a difference, you might be interested in knowing if this is due to a bias that depends on where you are on the scale variation. If a new measurement metho...
متن کاملTesting the agreement of medical instruments: overestimation of bias in the Bland-Altman analysis.
OBJECTIVES The Bland-Altman method is the most popular method used to assess the agreement of medical instruments. The main concern about this method is the presence of proportional bias. The slope of the regression line fitted to the Bland-Altman plot should be tested to exclude proportional bias. The aim of this study was to determine whether the overestimation of bias in the Bland-Altman ana...
متن کاملComparing methods of clinical measurement: reporting standards for bland and altman analysis.
UNLABELLED In this era of medical technology assessment and evidence-based medicine, evaluating new methods to measure physiologic variables is facilitated by standardization of reporting results. It has been proposed that assessing repeatability be followed by assessing agreement with an established technique. If the "limits of agreement" (mean bias +/- 2SD) are not clinically important, then ...
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ژورنال
عنوان ژورنال: Biochemia Medica
سال: 2015
ISSN: 1846-7482
DOI: 10.11613/bm.2015.015