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American Journal of Epidemiology|November 1, 1992
Sample size for studying intermediate endpoints within intervention trails or observational studiesL S Freedman, A Schatzkin
British Journal of Cancer|November 1, 1993
Pathology review in cancer researchL S Freedman, D Machin
Controlled Clinical Trials|September 1, 1982
Patient heterogeneity and the need for randomized clinical trialsS B Green
Hematology/Oncology Clinics of North America|August 19, 2000
Hypothesis testing in clinical trialsS B Green
Multivariate Behavioral Research|January 19, 2016
How Many Subjects Does It Take To Do A Regression AnalysisS B Green
British Journal of Cancer|May 1, 1978
Allocation of patients to treatment groups in a controlled clinical studyS J White, L S Freedman
Statistics in Medicine|July 1, 1990
A stratified Wilcoxon-type test for trendD Y Pee, L S Freedman
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