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magnusandy / ModelingJohnesDisease

AnyLogic Model of Johne's Disease in beef cattle
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BloodTestSubclinicalSensitivity and BloodTestClinicalSensitivity backwards #54

Closed add118 closed 7 years ago

add118 commented 7 years ago

I believe the BloodTestSubclinicalSensitivity and BloodTestClinicalSensitivity values in BaselineWithBothTests are backwards. Please confirm this and then one of us can commit a fix. When this is closed I'll resolve the comment on page 20 of the document.

magnusandy commented 7 years ago

From an email from cheryl Oct 30, 2016

The sensitivity #s as reported in the literature best apply to cows who are subclinical and clinical. The sensitivity is the % of animals that are correctly classified as having the disease. There should be some capacity to have the sensitivity for each test vary between the subclinical and clinical animals. (The fecal test will be more sensitive for the clinical animals & the blood test might actually be slightly less sensitive for the clinical animals.)

We confirmed with her the values we are currently using, they are the low/high values of the testing spectrum. i.e. the literature states blood testing has a sensitivity of 40-80% so we used those values.