All Questions
Tagged with diagnosis sensitivity-specificity
4 questions
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Assess sensitivity of a binary screening result across other continuous covariate(s)
I want to assess the sensitivity of a diagnostic screening test, which is a binary test (screen +ve and screen -ve). There is no continuous measure from this test - it is literally yes or no.
My ...
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Calculating sensitivity and specificity from survival data
I have a diagnostic test performed on 100 participants at baseline. I then follow up these participants for variable periods of time and have data regarding survival.
I have used a Cox regression ...
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2
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What happens with sensitivity and specificity after a second test?
What happens with sens/spec and PPV/NPV if one performs a test twice (or three times etc.)?
I will give an example from my own clinical practice. At many hospitals, we have a problem with ...
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Relationship between ROC curve and statistical significance in comparison of two groups
My question is about any possible relationship between the significance of a comparison test (Mann-Whitney U) and the ROC curve.
If the comparison test is strongly significant, should we expect a ...
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