| Literature DB >> 1579757 |
Abstract
Several methods are available for sample size calculation for clinical trials when survival curves are to be compared using the logrank statistic. We discuss advantages and disadvantages of some of these methods, and present simulation results under exponential, proportional hazards and non-proportional hazard situations.Mesh:
Year: 1992 PMID: 1579757 DOI: 10.1002/sim.4780110205
Source DB: PubMed Journal: Stat Med ISSN: 0277-6715 Impact factor: 2.373