Variable Life Adjusted Display (VLAD) charts are a visual way of monitoring clinical outcomes adjusted for risk.
We have developed a Microsoft
Excel spreadsheet tool that can be used to draw VLAD charts to help with
outcomes monitoring and audit. Risk adjustment can be implemented with a
different risk for each data record or with a single risk of an adverse
outcome applied to all the data (for instance an average mortality
rate). Please contact Christina Pagel to request a copy.
The orginal paper discussing the VLAD method applied to cardiac surgery is:
Lovegrove J, Valencia O, Treasure T, Sherlaw-Johnson C, Gallivan S. Monitoring the results of cardiac surgery by variable life-adjusted display. Lancet. 1997;350(9085):1128-1130.
A paper discussing the use of VLAD in a global health context is:
Pagel C, Prost A, Nair N, Tripathy P, Costello A, Utley M (2012)
Monitoring mortality trends in low-resource settings
Bull World Health Organ 2012;90:474–476
A brief description of the VLAD method, implementation and caveats is also available.