Fagan Post-Test Probability (likelihood ratio)
Fagan Post-Test Probability (likelihood ratio) - a deterministic tool in Sophie Well's Clinical Math & Conversions group.
Open the Fagan Post-Test Probability (likelihood ratio) → Runs in your browser. No signup, no tracking.
What this is
Fagan Post-Test Probability (likelihood ratio) is one of 230 deterministic tools in Sophie Well's Clinical Math & Conversions group. Fagan Post-Test Probability (likelihood ratio) - a deterministic tool in Sophie Well's Clinical Math & Conversions 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
Fagan TJ. Letter: Nomogram for Bayes theorem. N Engl J Med. 1975;293(5):257. Read the source ↗
Worked example: Pre-test 20% × LR 10 → post-test 71.4%.
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