Quantitative Methods 2017

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Test result

Real status

Fail to reject H0

(No disease)

Reject H0

(Disease)

H0 is true

(No disease)

162

18

180

Ha is true

(Disease)

2

18

20

164

36

200

PPV AND NPV DEPEND ON

PREVALENCE

Specificity=90%

Prevalence=10%

Sensitivity=90%

NPV=99% PPV=50%