Power Analysis and Sample Size Calculation The package allows for the Estimation of Sample-size and Power by Exploring Simulated Study Outcomes. It supports simulation-based power calculation for stand-alone case-control studies and for case-control analyses nested in cohort studies, that take account of realistic assessment error. Software Depends: MASS Amadou Gaye <ag239@le.ac.uk> Amadou Gaye, Paul Burton GPL-2 2011-12-19 application/tgz http://CRAN.R-project.org/package=ESPRESSO