title: Sample size calculation for the one-sample log-rank test.
abstract: In this paper, an exact variance of the one-sample log-rank test statistic is derived under the alternative hypothesis, and a sample size formula is proposed based on the derived exact variance. Simulation results showed that the proposed sample size formula provides adequate power to design a study to compare the survival of a single sample with that of a standard population.
authors.affiliation: Department of Biostatistics, St. Jude Children's Research Hospital, Memphis, TN 38105, USA.
authors.forename: Jianrong
authors.initials: J
authors.lastname: Wu
mesh_terms: D003198:Computer Simulation / Q000706:statistics & numerical data*; D006801:Humans; D016014:Linear Models; D018401:Sample Size
keywords: counting process; one-sample log-rank test; sample size formula; standard population; time to event