Does the POSSUM scoring system accurately predict mortality and morbidity in surgical patients?
The POSSUM scoring system provides a valid method for predicting morbidity and mortality rates for surgical audit.
POSSUM, a Physiological and Operative Severity Score for the enUmeration of Mortality and morbidity, is described. This system has been devised from both a retrospective and prospective analysis and the present paper attempts to validate it prospectively. Logistic regression analysis yielded statistically significant equations for both mortality and morbidity (P less than 0.001). When displayed graphically zones of increasing morbidity and mortality rates could be defined which could be of value in surgical audit. The scoring system produced assessments for morbidity and mortality rates which did not significantly differ from observed rates.
Copeland et al. (1991) studied this question.
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