Problem 1B Determination of Confounding Factors using a Test of Independence Age and CVD Frequencies Age Incident CVD No CVD Total 45 (36 555 <50 600 50+ 339 400 61 106 Total 894 1000 B. Is age independent of incident CVD? Perform a y2 test of independence Remember to document the five steps used in hypothesis testing. C. Why is age a confounding factor in this example?

MATLAB: An Introduction with Applications
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Question 1B 

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Problem 1B Determination of Confounding
Factors using a Test of Independence
Age and CVD Frequencies
Age
Incident CVD
No CVD
Total
45 (36
555
<50
600
50+
339
400
61
106
Total
894
1000
B. Is age independent of incident CVD? Perform a y2 test of independence
Remember to document the five steps used in hypothesis testing.
C. Why is age a confounding factor in this example?
Transcribed Image Text:Problem 1B Determination of Confounding Factors using a Test of Independence Age and CVD Frequencies Age Incident CVD No CVD Total 45 (36 555 <50 600 50+ 339 400 61 106 Total 894 1000 B. Is age independent of incident CVD? Perform a y2 test of independence Remember to document the five steps used in hypothesis testing. C. Why is age a confounding factor in this example?
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