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Comparative Study
. 2011 Nov;49(11):3997-4000.
doi: 10.1128/JCM.00624-11. Epub 2011 Sep 14.

Adjusted Wallace coefficient as a measure of congruence between typing methods

Ana Severiano  1 , Francisco R Pinto, Mário Ramirez, João A Carriço
Affiliations
Comparative Study

Adjusted Wallace coefficient as a measure of congruence between typing methods

Ana Severiano et al. J Clin Microbiol. 2011 Nov.

Abstract

We propose a new coefficient, the adjusted Wallace coefficient (AW), and corresponding confidence intervals (CI) as quantitative measures of congruence between typing methods. The performance of the derived CI was evaluated using simulated data. Published microbial typing data were used to demonstrate the advantages of AW over the Wallace coefficient.

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Figures

Fig. A1.
Fig. A1.
Coverage and average amplitude of 95% analytical confidence intervals for AW. Each dot represents a simulated population, with a particular set of parameters, and 1,000 samples taken from that population. Symbols and colors represent changes in the number of clusters (R × C) in each of the two classifications for the population (left panels), exponent alpha of a Zipfian distribution determining the distribution among clusters (middle panels), and sample size N (right panels).
See this image and copyright information in PMC

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