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James W. Fleshman Jr, MD

Arch Surg. 2007;142(11):1048.

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Assessment of outcomes for surgical services may become an important way for the government and insurance companies to grade health systems, hospitals, and individual practitioners. Any time outcomes are evaluated or compared, a method of assessing the influence of medical comorbidity on the selected outcome of a selected procedure for a selected disease must be provided to make the evaluation meaningful. POSSUM, P-POSSUM, and Cr-POSSUM scores are methods for assessing the severity of comorbid and operative factors that might influence surgical outcomes using complicated formulas associating numerous data points that include medical comorbidity and operative severity factors. Senagore and colleagues¹ showed that the 3 POSSUM scores need to be calibrated by each system and suggest that comparison between 2 systems should be undertaken carefully. The Cr-POSSUM score predicts mortality closely even though missing data from the medical records of patients causes little variation in the . . . [Full Text of this Article]

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