Key result
Existing P-POSSUM equations failed to fit emergency abdominal aortic aneurysm repairs, requiring a specific logistic regression model that successfully fit a test set (P=0.345).
Why the study?
Do existing P-POSSUM models accurately predict risk in patients undergoing emergency versus elective abdominal aortic aneurysm surgery?
Population
444 patients admitted for abdominal aortic aneurysm surgery between August 1993 and July 2000
Design
Cohort
Authors
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P-POSSUM may suffice for ruptured AAA audit; leaves open whether a dedicated model improves accuracy in this high-risk group.
Observational (n=444)
Do existing P-POSSUM models accurately predict risk in patients undergoing emergency versus elective abdominal aortic aneurysm surgery?
p-value: p=0.345
Patients with ruptured abdominal aortic aneurysms require a specific risk prediction model, as existing P-POSSUM equations for general and vascular surgery fail to accurately model their outcomes.
Prytherch et al. (2001) conducted an observational in Abdominal aortic aneurysm (AAA) surgery (n=444). P-POSSUM risk modeling vs. General and vascular surgery P-POSSUM equations was evaluated on Model fit for emergency aneurysm repairs (p=0.345). Existing P-POSSUM equations failed to fit emergency abdominal aortic aneurysm repairs, requiring a specific logistic regression model that successfully fit a test set (P=0.345).
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