MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN: 9781119256830
Author: Amos Gilat
Publisher: John Wiley & Sons Inc
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Question
Answer letter f and g only
a. How many false positives were there? Explain the consequence of a fals
b. How many false negatives were there? Explain the consequence of a fals
everyone for the dise
The table below shows what is likely
infectic
Screen
Test Negative
Total
Вер
Test Positive
TP
test for HIV infection.
4,030<
1,343,400
298,656,600
1,339,370
294,176,751
Have HIV
4,479,849
294,180,781,
300,000,000
Do Not Have HIV
5,819,219
Hi
Total
(ir
FN t TN
re
ar
www.annals.org/content/143/1/55.full 0XPP
A.
in
positive for the person tested.
negative for the person tested.
c. What is the sensitivity of this test? Explain the meaning of this statistic
the context of this test.
d. What is the specificity of this test? Explain the meaning of this statistic in
the context of this test.
e. What is the positive predictive value (PPV)? Use this value in a sentence
explaining to a person what his or her positive test might indicate.
f. What is the negative predictive value (NPV)? Use this value in a sentence
explaining to a person what his or her negative test might indicate.
g. Based on your results, explain why people are reluctant to recommend
universal screening for HIV.
eting Categorical Data
expand button
Transcribed Image Text:a. How many false positives were there? Explain the consequence of a fals b. How many false negatives were there? Explain the consequence of a fals everyone for the dise The table below shows what is likely infectic Screen Test Negative Total Вер Test Positive TP test for HIV infection. 4,030< 1,343,400 298,656,600 1,339,370 294,176,751 Have HIV 4,479,849 294,180,781, 300,000,000 Do Not Have HIV 5,819,219 Hi Total (ir FN t TN re ar www.annals.org/content/143/1/55.full 0XPP A. in positive for the person tested. negative for the person tested. c. What is the sensitivity of this test? Explain the meaning of this statistic the context of this test. d. What is the specificity of this test? Explain the meaning of this statistic in the context of this test. e. What is the positive predictive value (PPV)? Use this value in a sentence explaining to a person what his or her positive test might indicate. f. What is the negative predictive value (NPV)? Use this value in a sentence explaining to a person what his or her negative test might indicate. g. Based on your results, explain why people are reluctant to recommend universal screening for HIV. eting Categorical Data
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