Detecting systematic bias between two raters
نویسندگان
چکیده
منابع مشابه
Kappa Test for Agreement Between Two Raters
Introduction This module computes power and sample size for the test of agreement between two raters using the kappa statistic. The power calculations are based on the results in Flack, Afifi, Lachenbruch, and Schouten (1988). Calculations are based on ratings for k categories from two raters or judges. You are able to vary category frequencies on a single run of the procedure to analyze a wide...
متن کاملDelta: a new measure of agreement between two raters.
The most common measure of agreement for categorical data is the coefficient kappa. However, kappa performs poorly when the marginal distributions are very asymmetric, it is not easy to interpret, and its definition is based on hypothesis of independence of the responses (which is more restrictive than the hypothesis that kappa has a value of zero). This paper defines a new measure of agreement...
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Measurement of tris(hydroxymethyl)aminomethane buffers and blood samples was used to compare the following commercial pH instruments: Corning Models 160 and 165, Instrumentation Laboratory, Inc. Model 313, and Radiometer Models E5021 and BMS 3MK2. These comparisons uncovered a systematic bias of 0.02 pH units in Instrumentation Laboratory, Inc. electrodes manufactured before April 1973. Other f...
متن کاملPowerful Exact Unconditional Tests for Agreement between Two Raters with Binary Endpoints
Asymptotic and exact conditional approaches have often been used for testing agreement between two raters with binary outcomes. The exact conditional approach is guaranteed to respect the test size as compared to the traditionally used asymptotic approach based on the standardized Cohen's kappa coefficient. An alternative to the conditional approach is an unconditional strategy which relaxes th...
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The minimum bias method is a natural tool to use in parameterizing classification ratemaking plans. Such plans build rates for a large, heterogeneous group of insureds using arithmetic operations to combine a small set of parameters in many different ways. Since the arithmetic structure of a class plan is usually not wholly appropriate, rates for some individual classification cells may be bias...
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ژورنال
عنوان ژورنال: Clinical and Experimental Pharmacology and Physiology
سال: 2004
ISSN: 0305-1870,1440-1681
DOI: 10.1111/j.1440-1681.2004.03960.x