1. A Comprehensive Risk Score to Predict Prolonged Hospital Length of Stay After Heart Transplantation 
Todd C. Crawford, MD, J. Trent Magruder, MD, Joshua C. Grimm, MD, Alejandro Suarez-Pierre, MD, Nishant Patel, MD, Christopher M. Sciortino, MD, Kenton J. Zehr, MD, Kaushik Mandal, MD, Ryan J. Tedford, MD, Stuart D. Russell, MD, John V. Conte, MD, Robert S. Higgins, MD, Duke E. Cameron, MD, Glenn J. Whitman, MD 
The Annals of Thoracic Surgery 
Volume 105, Issue 1, Pages (January 2018)
DOI: /j.athoracsur
Copyright © 2018 The Society of Thoracic Surgeons Terms and Conditions

2. Fig 1
Histogram demonstrating the distribution of the prolonged hospitalization after heart transplant (PHAHT) scores in the (A) derivation cohort and (B) validation cohort.
The Annals of Thoracic Surgery  , 83-90DOI: ( /j.athoracsur )
Copyright © 2018 The Society of Thoracic Surgeons Terms and Conditions

3. Fig 2
Scatter plot comparing predicted rate (x-axis) of prolonged hospital length of stay (LOS) after heart transplant to observed rate (y-axis) in the validation cohort. Bubble size reflects the frequency with which unique prolonged hospitalization after heart transplant (PHAHT) scores were observed. The R2 value for the logistic regression equation comparing observed to expected rates of prolonged hospitalization was 0.62, which corresponded to a correlation coefficient, r, of 0.79.
The Annals of Thoracic Surgery  , 83-90DOI: ( /j.athoracsur )
Copyright © 2018 The Society of Thoracic Surgeons Terms and Conditions

4. Fig 3
Kaplan-Meier survival analysis assessing freedom from mortality at 1 year after heart transplantation (HT), stratified by low risk (blue line), moderate risk (red line), and high risk (green line) groups according to prolonged hospitalization after heart transplant (PHAHT) score. (The lighter colored lines on either side of the dark lines represent 95% confidence intervals.) Freedom from mortality differed significantly between risk groups (log rank p < 0.01). (CI = confidence interval.)
The Annals of Thoracic Surgery  , 83-90DOI: ( /j.athoracsur )
Copyright © 2018 The Society of Thoracic Surgeons Terms and Conditions