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Tagged with prevalence sensitivity-specificity
5 questions
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Prevalence threshold calculations error
I see on this page the formula for calculation of prevalence threshold:
Given also are following values on that page:
...
- 10.2k
1
vote
1
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63
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What is the probability of at least one person in a sample of k people being infected?
Given the prevalence, sensitivity and specificity of a single test are known.
- 111
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Relationship between sensitiviy, probability of detection and Prevalence
Folks, I have 3 questions:
If I know the number of exams performed with a specific test on a group of patients and the test's sensitivity, can I directly estimate the overall probability of detecting ...
0
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2
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Is it possible that false-positive rate decreases with increasing prevalence?
I am interested in the effect of prevalence on prediction performance. Chouldechova (2016) states that:
[w]hen using a test-fair [recidivism prediction instrument] in
populations where recidivism ...
- 113
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Post test probability with a ROC curve
I have data that is normally distributed related to risk of a particular disease. At the median of the distribution, you would expect to observe the population prevalence level of disease P0=0.01. For ...
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