compute the specificity of the BinaxNOW screening test and describe the result in a sentence

INSTRUCTIONS TO CANDIDATES

ANSWER ALL QUESTIONS

 

1)      The BinaxNOW COVID-19 Antigen Self-Test is an at-home SARS-COV-2 rapid test that has received emergency use authorization from the FDA and is widely available for purchase.  The manufacturer evaluated the performance of the BinaxNOW by comparing it to a gold standard “Comparator Method”. Overall, 117 subjects tested positive for SARS-COV-2 using the gold standard comparator method, and 99 of these had a positive BinaxNOW test.  The other 343 subjects were negative based on the Comparator Method, and 5 of these had a positive BinaxNOW test.

a)      Create a contingency table to summarize these results. (4 points)

b)      Compute the sensitivity of the BinaxNOW screening test and describe the result in a sentence. Show your work. (4 points)

c)      Compute the specificity of the BinaxNOW screening test and describe the result in a sentence. Show your work. (4 points)

d)      Compute the positive predictive value of the BinaxNOW screening test and describe the result in a sentence. Show your work. (4 points)

 

 

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