

Subsequent Revision  Date or Frequency of Revision 
Added link to mobile version of diagnostic test calculator (same mathematical engine, different user interface)  17 February 2012 
Added personal action thresholds to diagnostic test calculator  12 November 2007 
Added tree diagram of 2x2 table to diagnostic test calculator, suggested by J. Peter Donnelly  21 April 2010 
Added workshops section  29 April 2014 