Precision Based Sample Size Calculation

Bland (2009) recommended to base study sizes on the width of the confidence interval rather the power of a statistical test. The goal of 'presize' is to provide functions for such precision based sample size calculations. For a given sample size, the functions will return the precision (width of the confidence interval), and vice versa.


Reference manual

It appears you don't have a PDF plugin for this browser. You can click here to download the reference manual.


0.1.3 by Alan G. Haynes, 19 days ago

Report a bug at

Browse source code at

Authors: Armando Lenz [aut] , Alan G. Haynes [cre, aut] , Andreas Limacher [aut] , Odile Stalder [ctb]

Documentation:   PDF Manual  

GPL-3 license

Imports ggplot2, kappaSize, shiny, shinydashboard

Suggests binom, Hmisc, testthat

See at CRAN