Variance Calculations for Direct Adjuste
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Dr. M. H. Gail; Dr. D. P. Byar
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Article
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1986
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John Wiley and Sons
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English
โ 732 KB
Several investigators have recently constructed survival curves adjusted for imbalances in prognostic factors by a method which we call direct adjustment. We present methods for calculating variances of these direct adjusted survival curves and their differences. Estimates of the adjusted curves, th