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The Problem of Conversion in Method Comparison Studies

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  • P. A. Lewis
  • P. W. Jones
  • J. W. Polak
  • H. T. Tillotson

Abstract

This paper introduces an extension of the well‐known method comparison problem previously studied by Altman and Bland and others. The problem concerns the comparison of two approximate methods of measuring a quantity which return results expressed in different units. Such situations can arise where the methods in question proceed by measuring proxy quantities. Thus the data sets need to be converted to the same units before comparisons may take place. The paper presents an approach to this problem based on the theory of structural relationship models. This approach is applied to data gathered by two approximate methods of measuring the fuel consumption of motor vehicles.

Suggested Citation

  • P. A. Lewis & P. W. Jones & J. W. Polak & H. T. Tillotson, 1991. "The Problem of Conversion in Method Comparison Studies," Journal of the Royal Statistical Society Series C, Royal Statistical Society, vol. 40(1), pages 105-112, March.
    • Handle: RePEc:bla:jorssc:v:40:y:1991:i:1:p:105-112
    DOI: 10.2307/2347908
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