Use the Following information to answer questionse EIA results are recorded as optical-density (OD) ratios. The OD ratio is the ratio of absorbance of the tested sample to the absorbance of a control sample. The greater the OD ratio, the more "positive" is the test result. The EIA, as with most other screening tests, is not perfect; there is some overlap of optical-density ratios of samples that are actually antibody positive and those that are actually antibody negative. This is illustrated in the following figure: Hypothetical distribution of results on an EIA for HIV, by actual antibody status In terms of sensitivity and specificity, what happens if you lower the cut-off from "A" to "C"? Actualy without antbody Actualy have antbody In terms of sensitivity and specificity, what happens if you raise the cut-off from "A" to "B"? OD Rato Mumber of persons

Use the Following information to answer questionse EIA results are recorded as optical-density (OD) ratios. The OD ratio is the ratio of absorbance of the tested sample to the absorbance of a control sample. The greater the OD ratio, the more "positive" is the test result. The EIA, as with most other screening tests, is not perfect; there is some overlap of optical-density ratios of samples that are actually antibody positive and those that are actually antibody negative. This is illustrated in the following figure: Hypothetical distribution of results on an EIA for HIV, by actual antibody status In terms of sensitivity and specificity, what happens if you lower the cut-off from "A" to "C"? Actualy without antbody Actualy have antbody In terms of sensitivity and specificity, what happens if you raise the cut-off from "A" to "B"? OD Rato Mumber of persons

Mathematics For Machine Technology

8th Edition

ISBN:9781337798310

Author:Peterson, John.

Publisher:Peterson, John.

Chapter29: Tolerance, Clearance, And Interference

Section: Chapter Questions

Problem 16A: Spacers are manufactured to the mean dimension and tolerance shown in Figure 29-12. An inspector...

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