Spreadsheet That Shows P-Value Functions

Aragaki, Corinne


University of Texas

School of Public Health, Dallas

5323 Harry Hines Boulevard V8.112

Dallas, TX 75390-9128

(address for correspondence)

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To the Editor:

While visualizing the P-value function is desirable, 1 it cannot be done using standard statistical packages. I created a simple EXCEL 2000 spreadsheet to take 2 × 2 contingency table values, compute simple ratios as described in Modern Epidemiology, 2 and graph P-value functions for both the corresponding odds and risk ratios. The spreadsheet can be copied from http://www2.utsouthwestern.edu/publichealth/Aragaki/Epitools.htm, along with documentation. Perhaps it will aid in the instruction of epidemiology students.

Corinne Aragaki

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1. Poole C. Beyond the confidence interval. Am J Public Health 1987; 77: 195–199.
2. Rothman KJ, Greenland S. Modern Epidemiology, 2nd ed. Philadelphia: Lippincott-Raven, 1998.
© 2001 Lippincott Williams & Wilkins, Inc.