Visual presentation of statistical concepts in diagnostic testing: the 2 × 2 diagram.

Johnson, Kevin M; Johnson, Benjamin K · AJR Am J Roentgenol · 2014

review · Level V

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Abstract

The purpose of this article is to present a visual conceptual framework for important statistical concepts in radiology, and to provide an online application to facilitate this visualization. Statistical measures such as sensitivity, specificity, and predictive values are ubiquitous in medical literature, yet thinking fluidly about these concepts is not always easy. The 2 × 2 diagram is a helpful guide.

Medical subject headings