1. Validation of a Nomogram Predicting Complications After Esophagectomy for Cancer 
Brechtje A. Grotenhuis, MD, Pieter van Hagen, MD, Johannes B. Reitsma, MD, PhD, Sjoerd M. Lagarde, MD, PhD, Bas P.L. Wijnhoven, MD, PhD, Mark I. van Berge Henegouwen, MD, PhD, Hugo W. Tilanus, MD, PhD, J. Jan B. van Lanschot, MD, PhD 
The Annals of Thoracic Surgery 
Volume 90, Issue 3, Pages (September 2010)
DOI: /j.athoracsur
Copyright © 2010 The Society of Thoracic Surgeons Terms and Conditions

2. Fig 1
Distribution of risk score (as calculated with the original nomogram) in the patients of the validation cohort who experienced no complications, minor complications, or severe complications. (Concordance [C] statistic = a measure that can be interpreted as the probability among all possible pairs between patients from different outcome categories that the patient with the more severe complication also has the higher risk score.)
The Annals of Thoracic Surgery  , DOI: ( /j.athoracsur )
Copyright © 2010 The Society of Thoracic Surgeons Terms and Conditions

3. Fig 2
Expected (exp) versus observed (obs) number of patients in each of the three outcome categories (no complications, minor complications, or severe complications) across seven quantiles of increasing expected risk, with a p value for goodness-of-fit of 0.84 (ie, differences between observed and expected number of patients are nonsignificant).
The Annals of Thoracic Surgery  , DOI: ( /j.athoracsur )
Copyright © 2010 The Society of Thoracic Surgeons Terms and Conditions