General Deming Regression for Estimating Systematic Bias and Its Confidence Interval in Method-Comparison Studies
نویسندگان
چکیده
منابع مشابه
General deming regression for estimating systematic bias and its confidence interval in method-comparison studies.
BACKGROUND Various forms of least-squares regression analyses are used to estimate average systematic error (bias) and its confidence interval in method-comparison studies. When assumptions that underlie a particular regression method are inappropriate for the data, errors in estimated statistics result. In this report, I present an improved method for regression analysis that is free from the ...
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Application of Deming regression analysis to interpret method comparison data presupposes specification of the squared analytical error ratio (lambda), but in cases involving only single measurements by each method, this ratio may be unknown and is often assigned a default value of one. On the basis of simulations, this practice was evaluated in situations with real error ratios deviating from ...
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SUMMARY The object of the present investigation is to consider a robust procedure for the problem of providing a bounded-length confidence interval for the regression coefficient (in a simple regression model) based on Kendall's (1955) tau. The problem of estimating the difference in the location parameters in the two-sample case may be viewed as a special case of our problem. It is shown that ...
متن کاملTable 1 . Test Data for Analysis by Deming Regression Method
CLINICALCHEMISTRY,Vol. 26, No. 10, 198
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A statistically significant difference in mean values between two laboratory quantitation methods is interpreted as a bias. Sometimes such a difference is so minute that it does not constitute any practical concern. An alternative approach is to test statistically whether the two methods are close enough, not for equality. This is to look at the confidence interval of the mean method difference...
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ژورنال
عنوان ژورنال: Clinical Chemistry
سال: 2000
ISSN: 0009-9147,1530-8561
DOI: 10.1093/clinchem/46.1.100