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Designing Clinical Research Textbook
By Stephen B. Hulley, MD, MPH et al.
The Designing Clinical Research textbook
introduces the methods of clinical investigation to physicians
and other health professionals.
Tools
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Sample size calculators for comparing means (t-test), comparing proportions (chi-square test), estimating
a mean (with a confidence interval of a particular width), and estimating a proportion (with a confidence interval
of a particular width) are available as a downloadable Excel spreadsheet
(use the tab at the bottom of the spreadsheet to select the calculator)
or online at
t-test,
Chi-square,
CI for a mean, and
CI for a proporation.
Third Edition (2007) Buy at
Lippincott, Williams and Wilkins
Second Edition (2001)
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