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Estimate sample size based on precision rather than power. 'precisely' is a study planning tool to calculate sample size based on precision. Power calculations are focused on whether or not an estimate will be statistically significant; calculations of precision are based on the same principles as power calculation but turn the focus to the width of the confidence interval. 'precisely' is based on the work of 'Rothman and Greenland' (2018).
Package details 


Author  Malcolm Barrett [aut, cre] (<https://orcid.org/0000000302995825>) 
Maintainer  Malcolm Barrett <malcolmbarrett@gmail.com> 
License  MIT + file LICENSE 
Version  0.1.2 
URL  https://github.com/malcolmbarrett/precisely 
Package repository  View on CRAN 
Installation 
Install the latest version of this package by entering the following in R:

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