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Previous Volume 333:938-939 October 5, 1995 Number 14 Next

	Since this article has no abstract, we have provided an extract of the first 100 words of the full text and any section headings.

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To the Editor: Green and Wintfeld (May 4 issue)¹ raise valid questions about the severity coding in the New York State Department of Health's Cardiac Surgery Reporting System (CSRS). Some errors in their analysis, however, may cause policy makers to draw the wrong conclusions about the usefulness of hospital rankings in general.

The main statistical concern of the authors is that of "predictive accuracy." They incorrectly suggest that a low R² value for the correlation between observed and expected death rates for hospitals (or surgeons), as estimated by the CSRS model,² indicates that the CSRS model has poor predictive accuracy. . . . [Full Text of this Article]

References

This article has been cited by other articles:

• Shahian, D. M., Normand, S.-L., Torchiana, D. F., Lewis, S. M., Pastore, J. O., Kuntz, R. E., Dreyer, P. I. (2001). Cardiac surgery report cards: comprehensive review and statistical critique. Ann. Thorac. Surg. 72: 2155-2168 [Abstract] [Full Text]