[R] [R-pkgs] New CRAN Package: BI - Generate James (1996) and Bang (2004) Blinding Indexes

Marc Schwartz via R-packages r-p@ck@ge@ @end|ng |rom r-project@org
Mon May 17 14:47:02 CEST 2021

Hi All,

Version 1.0.0 of the new BI package is now on CRAN.

The BI package will generate the James Blinding Index, as described in 
James et al (1996, https://pubmed.ncbi.nlm.nih.gov/8841652/) 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 

The package is available from:


and is maintained on Github:


Warm regards,

Marc Schwartz

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