POSSUM scoring system as an instrument of audit in lung resection surgery Alessandro Brunelli, MD, Aroldo Fianchini, MD, Rosaria Gesuita, MS, Flavia Carle, PhD The Annals of Thoracic Surgery Volume 67, Issue 2, Pages 329-331 (February 1999) DOI: 10.1016/S0003-4975(98)00822-4
Fig 1 Receiver operating characteristic curves for the two predictive models. The diagonal line indicates a predictive ability of the variables no better than chance (true positive rate equal to false positive rate). The area under the curve for model 1 is 0.66 and for model 2 is 0.67. The Annals of Thoracic Surgery 1999 67, 329-331DOI: (10.1016/S0003-4975(98)00822-4)
Fig 2 Comparison between observed and predicted postoperative morbidity by model 1 (A) and model 2 (B). No differences were found between predicted and observed complications (χ2 test, p > 0.05). The Annals of Thoracic Surgery 1999 67, 329-331DOI: (10.1016/S0003-4975(98)00822-4)