BI is a contributed package for R (http://www.r-project.org/) CRAN URL: http://cran.r-project.org/web/packages/BI/index.html GitHub URL: https://github.com/marcschwartz/BI Title: Blinding Assessment Indexes for Randomized, Controlled, Clinical Trials Description: Generate the James Blinding Index, as described in James et al (1996) and the Bang Blinding Index, as described in Bang et al (2004) . These are measures to assess whether or not satisfactory blinding has been maintained in a randomized, controlled, clinical trial. These can be generated for trial subjects, research coordinators and principal investigators, based upon standardized questionnaires that have been administered, to assess whether or not they can correctly guess to which treatment arm (e.g. placebo or treatment) subjects were assigned at randomization. License: This package is licensed under GPL version 3. See the GPL-3 file. Authors: Marc Schwartz and Nate Mercaldo Copyright 2010 - 2020: Original 2010 R Code by Nate Mercaldo (nmercaldo@mgh.harvard.edu) Copyright 2021 - 2022: Updates by Marc Schwartz (marc_schwartz@me.com) If you wish to install this package directly from this GitHub repository, as opposed to installing from CRAN, install the "devtools" package and use the following command: devtools::install_github("marcschwartz/BI") Please review the help page for the install_github() function for additional options.