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Nomograms for Calculating the Number of Patients Needed for a Clinical Trial with Survival as an Endpoint

David A. Schoenfeld and Jane R. Richter
Biometrics
Vol. 38, No. 1 (Mar., 1982), pp. 163-170
DOI: 10.2307/2530299
Stable URL: http://www.jstor.org/stable/2530299
Page Count: 8
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Nomograms for Calculating the Number of Patients Needed for a Clinical Trial with Survival as an Endpoint
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Abstract

This paper presents nomograms for calculating the sample size for a clinical trial with survival as an endpoint. The nomograms are valid when survival is exponential and patients enter the study uniformly.

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