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Ann Thorac Surg 1995;60:100-101
© 1995 The Society of Thoracic Surgeons

Discussion

The first 20% of the full text of this article appears below.


   Introduction
 
See also page 96.

DR CHARLES A. S. MARRIN (Lebanon, NH): I think this is a commendable study, and it sheds light on some questions to which many of us, and indeed many of our adversaries, are anxious to know the answers. However, I am somewhat uncomfortable with your conclusions about the model. It is in the nature of prediction models that they do not perform well at the extremes. The fact is that this is an unusual population, and as the model is designed to apply to the majority of patients, it is unlikely that it will predict accurately in high-risk subsets.

I also would take issue with your comment about adjusting for age. Clearly the age weighting assigned by Dr Parsonnet in his original model overpredicts the risk; however, when you eliminated age as a consideration, there was not a dramatic improvement in the . . . [Full Text of this Article]






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Copyright © 1995 by The Society of Thoracic Surgeons.