HC.9 Beslissen in de geneeskunde Flashcards

1
Q

Wat is de regel van Bayes?

A

post-test odds = likelihood ratio x prior odds

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2
Q

Wat is formule voor odds en kans?

A

odds: p / (1-p)
p: odds / (1 + odds)

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3
Q

Wat is formule voor LR+ en LR-?

A

LR+: sensi / (1-speci)

LR-: (1-sensi) / speci

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4
Q

Hoe pas je de regel van Bayes toe op een casus met de prior kans van 49%?

A

Prior odds = 0,49 / 0,51 = 0,96
LR+ = 0,71 / (1-0.90) = 7,1
Post test odds = 7,1 x 0,96 = 6,8
Posterior kans = 6,8 / 7,8 = 0,87

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