possum: Surgical Risk Prediction with the POSSUM Score Family
Computes the Physiological and Operative Severity Score for the
enUmeration of Mortality and morbidity (POSSUM), its Portsmouth
modification (P-POSSUM), and the colorectal (CR-POSSUM), vascular
(V-POSSUM) and ruptured aortic aneurysm (RAAA-POSSUM) variants,
risk-adjustment systems used in surgical audit. Functions map
physiological and operative variables to their
component scores and return the predicted probabilities of morbidity and
mortality from the published logistic equations. The coefficients follow
Copeland and others (1991) <doi:10.1002/bjs.1800780327> for POSSUM,
Prytherch and others (1998) <doi:10.1046/j.1365-2168.1998.00840.x> for
P-POSSUM, Tekkis and others (2004) <doi:10.1002/bjs.4430> for the
colorectal variant (CR-POSSUM), and Neary and others (2003)
<doi:10.1002/bjs.4041> for the vascular variant (V-POSSUM). The
package is intended for audit and research; it is not a
validated medical device and must not be used as the sole basis for
clinical decisions.
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[aut, cre],
Daniel Enrique Chourio Barboza [aut]