What question did this study set out to answer?

To estimate regression parameters using survival models and evaluate the efficiency of different analyses.

January 1, 1974Biometrika

Some effciency calculations for survival distributions

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To estimate regression parameters using survival models and evaluate the efficiency of different analyses.
Examined survival models with regression variables.
Compared rank analysis from Cox's regression and life model to exponential case analysis.
Analyzed practical efficiency in various scenarios.
Rank analysis shows better efficiency over model-dependent analysis in most practical cases.

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Randomized trial examines regression parameter estimation in survival models, suggesting rank analysis advantages.

John D. Kalbfleisch (1974) studied this question.

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