A sketch by Anastasia Mandel reinterpreting View of Mount Fuji by Utagawa Hiroshige (1859) with the statistical caption "Survival analysis." This is part of a collection of sketches by Anastasia...

This article presents a dataset from an experiment designed to test if increased reproduction reduces longevity for male fruitflies. The data are in .dat format. Key Words: Analysis of variance;...

"It's Just STATA Code To Me" is a song written by Dorry Segev of Johns Hopkins University that reflects on a number of issues in biostatistical data analysis. The song may be sung to the tune of...

This course in Clinical Research provides homework, old exams, and reviews of introductory concepts. Topics covered include 2 by 2 Tables, Mantel-Haenszel,
2 by k Tables: Trends, Paired...

This page calculates either estimates of accrual or power for null and alternative median survival rates assuming an exponential distribution. The program gives critical values for either median...

This page calculates the expected number of deaths, the expected proportion of deaths at a given time, or the time at which a given proportion of deaths have occurred for a planned study. Users can...

This page calculates either estimates of accrual or power for null and alternative survival functions based on the non-parametric estimate of the survival distribution. The program also gives large...

This page calculates either estimates of sample size or power for equivalence studies. Exponential distributions are assumed and are specified using the ratio of hazard for treatment 1 to hazard for...

This page calculates either estimates of sample size or power for interaction tests. The program allows for unequal sample size allocation in the four cells defined by the two treatment groups and...

This page calculates either estimates accrual or power for differences in survival times between two groups. The program allows for unequal sample size allocation between the two groups. The survival...