1. Evaluation of the Caprini Model for Venothromboembolism in Esophagectomy Patients 
Philip D. Hewes, BSE, Krista J. Hachey, MD, Xue Wei Zhang, BS, Yorghos Tripodis, PhD, Pamela Rosenkranz, BSN, MEd, Michael I. Ebright, MD, David McAneny, MD, Hiran C. Fernando, MBBS, Virginia R. Litle, MD 
The Annals of Thoracic Surgery 
Volume 100, Issue 6, Pages (December 2015)
DOI: /j.athoracsur
Copyright © 2015 The Society of Thoracic Surgeons Terms and Conditions

2. Fig 1
Risk assessment model scores composed of weighted sum of each patient’s risk factors are displayed on x-axis, whereas bars representing frequencies of patients are plotted on y-axis, stratified by venous thromboembolism (VTE) status. Net VTE incidence, defined as proportion occurring at or less than specified Caprini score to total number of patients at or below same score, is shown in gray.
The Annals of Thoracic Surgery  , DOI: ( /j.athoracsur )
Copyright © 2015 The Society of Thoracic Surgeons Terms and Conditions

3. Fig 2
Receiver operating characteristic curve with Caprini score as predictor and 60-day venous thromboembolism event as response, with 95% confidence intervals (CIs) for sensitivity and “1 – specificity.” Dashed line represents line of no discrimination. Points are labeled with corresponding Caprini score thresholds reflecting range of scores observed (8– 21). For thresholds 8 to 15, 95% CIs were not graphed because of overlap—all sensitivity 95% CIs were 1.0 to 1.0, whereas “1 – specificity” 95% CIs were as follows: 8, 1.00 to 1.00; 9, 0.92 to 1.00; 10, 0.88 to 1.00; 11, 0.73 to 0.92; 12, 0.68 to 0.88; 13, 0.53 to 0.77; 14, 0.35 to 0.60; and 15, 0.22 to 0.45.
The Annals of Thoracic Surgery  , DOI: ( /j.athoracsur )
Copyright © 2015 The Society of Thoracic Surgeons Terms and Conditions