P-POSSUM (Portsmouth-recalibrated mortality)
P-POSSUM (Portsmouth-recalibrated mortality) - a deterministic tool in Sophie Well's Clinical Scoring & Risk group.
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What this is
P-POSSUM (Portsmouth-recalibrated mortality) is one of 230 deterministic tools in Sophie Well's Clinical Scoring & Risk group. P-POSSUM (Portsmouth-recalibrated mortality) - a deterministic tool in Sophie Well's Clinical Scoring & Risk group.
When to use it
Use this tool when you need a quick, citable reference. Every calculation runs entirely in your browser - no inputs leave your device, no account is required, no AI is involved. The site enforces a strict Content Security Policy and ships no analytics or third-party CDN.
References
Prytherch DR, Whiteley MS, Higgins B, et al. POSSUM and Portsmouth POSSUM for predicting mortality. Br J Surg. 1998;85(9):1217-1220. Read the source ↗
Worked example: P-POSSUM physiological score 12, operative score 6: recalibrated predicted mortality 0.2% (original POSSUM equation 1.1%).
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