1. Training Residents in Mitral Valve Surgery
Roger J.F. Baskett, MD, Dimitri Kalavrouziotis, MD, Karen J. Buth, MS, Gregory M. Hirsch, MD, John A.P. Sullivan, MD 
The Annals of Thoracic Surgery 
Volume 78, Issue 4, Pages (October 2004)
DOI: /j.athoracsur

2. Fig 1
All mitral valve cases combined morbidity and mortality observed-to-expected (O/E) ratios for the residents as a group (represented by the topmost horizontal bar) and each of the individual staff surgeons who performed greater than 25 mitral valve procedures during the study period (represented by the five inferior horizontal bars). Each dot and horizontal bar displays the point estimate for the O/E ratio and the 95% confidence intervals, respectively. The expected composite outcome, mortality or composite morbidity (reoperation for bleeding or valvular problems, wound infection, permanent stroke, perioperative myocardial infarction, ventilation > 24 hours) is calculated for each surgeon's patients based on the coefficients from the logistic regression model for composite morbidity.
The Annals of Thoracic Surgery  , DOI: ( /j.athoracsur )