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Biostatistics and Epidemiology-1. Define sensitivity and specificity
2. A cancer screening test is being applied in a population of 200 men who were also evaluated through the biopsy of tumor. 30 of the men were confirmed having cancer through biopsy. Out of these 30, 25 were also found to have cancer through the screening test. Screening test also found 15 cases to be having cancer but this was not confirmed by biopsy. Based on this information draw 2 x 2 table showing numbers in each of the 4 cells and compute sensitivity, specificity, Positive predictive value and Negative predictive values of the test for presence and absence of the disease.
3. Define positive predictive value (PPV) and negative predictive value (NPV).
4. An epidemiologist in Saudi Arabia wants to study the efficacy of iron supplementation for the prevention of HIV infection. He wants to make sure that only subjects who are free of HIV infection are enrolled in his trial. Based on the outcome of the test, he decides who could participate in his iron supplementation trail.
What are the major structural proteins present in the integument? Where are they found, how are they produced
Indicate with arrows the classes above that would not be produced if A and B were completely linked.
Choose one specific receptor to discuss: include the specific role of this receptor in the target cancer and the effects on the cell resulting from aberrant expression or dysregulation of the receptor - where does Ras fit into the larger picture of..
Using information provided, what is the hydrogen/helium content inside a star that is the approximate age of our sun. what aspects are consequences of the evolutionary history of animals you are considering.
Would you expect to find more crabs during a full moon or during a quarter moon?
What is the total lethality of this thermal process and What percentage of the total lethality occurred at temperatures less than 220 F, i.e. slightly above the boiling point of water ? Record your answer to the nearest integer.
A colloidal system is stable in the absence of polymer. A small amount of polymer is added and the colloidal particles coagulate but if a large amount of polymer is added they redisperse.
Which is more important with respect to functional groups A) they confer greater reactivity to the hydrocarbon skeletons to which they attach
The membrane transport proteins that function in facilitated diffusion are not specific for the substances they transport. Catabolic pathway reactions are likely to yield monomers and/or ATP energy to do cell work
q1. offer a model to explain how the f-box protein slf and the s-rnase mediate self incompatibility. be sure to account
More than a dozen recessive illnesses that are very rare in most of world are fairly common among the Bedouin people who live in the Negev Desert area of Israel.
You have identified that flame wing (fw) is linked to blue eyes (be) and short legs (sl) on chromosome 2. You cross a fw, be, sl fly with flies containing various deletions within the 200 Kb.
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