1. Comparison of Three Measurements of Cardiac Surgery Mortality for the Northern New England Cardiovascular Disease Study Group 
Donald S. Likosky, PhD, William C. Nugent, MD, Robert A. Clough, MD, Paul W. Weldner, MD, Hebe B. Quinton, MS, Cathy S. Ross, MS, Gerald T. O’Connor, PhD, DSc 
The Annals of Thoracic Surgery 
Volume 81, Issue 4, Pages (April 2006)
DOI: /j.athoracsur
Copyright © 2006 The Society of Thoracic Surgeons Terms and Conditions

2. Fig 1
Comparison of three mortality metrics by year of operation. (In-hospital = light gray line; 30-day = medium gray line; procedural = black line.)
The Annals of Thoracic Surgery  , DOI: ( /j.athoracsur )
Copyright © 2006 The Society of Thoracic Surgeons Terms and Conditions