1. Subjective versus statistical model assessment of mortality risk in open heart surgical procedures 
Joan M.V Pons, MD, Josep M Borras, MD, Josep A Espinas, MD, Victor Moreno, MD, Maria Cardona, MD, Alı́cia Granados, MD 
The Annals of Thoracic Surgery 
Volume 67, Issue 3, Pages (March 1999)
DOI: /S (98)

2. Fig 1
Assessment of surgical mortality risk by subjective assessment (top panel) and, statistical model (bottom panel). (CI = confidence interval.)
The Annals of Thoracic Surgery  , DOI: ( /S (98) )

3. Fig 2
Calibration curve of predicted versus observed mortality rates by risk level of surgeons’ subjective assessment.
The Annals of Thoracic Surgery  , DOI: ( /S (98) )

4. Fig 3
Relation between subjective surgical risk level and individual patient score according to the statistical model. (Box indicates the lower and upper quartiles and the central line the median. Points at the ends of the “whiskers” are the 2.5% and 97.5% values of the cumulative relative frequencies.)
The Annals of Thoracic Surgery  , DOI: ( /S (98) )