39. The table below depicts the association between orange juice consumption wit
ID: 3231514 • Letter: 3
Question
39. The table below depicts the association between orange juice consumption with 4-year incidence of coronary heart disease (CHD) in a cohort study of 4,000 people.
Orange Juice
CHD
No CHD
TOTAL
4 glasses per day
900
1560
2,460
< 4 glasses per day
900
640
1,540
TOTAL
1800
2,200
4,000
a. Calculate and interpret the cumulative incidence (risk) of CHD among those who consume 4 glasses of orange juice per day. Please round your final answers to the hundredths place.
b. Calculate and interpret the cumulative incidence (risk) of CHD among those who consume < 4 glasses of orange juice per day. Please round your final answers to the hundredths place.
c. Calculate the relative risk (RR) of acquiring CHD, using those who consume < 4 glasses of orange juice per day as the referent group. Please round your final answers for each to the hundredths place.
d. Provide an interpretation to your answer in part c.
Orange Juice
CHD
No CHD
TOTAL
4 glasses per day
900
1560
2,460
< 4 glasses per day
900
640
1,540
TOTAL
1800
2,200
4,000
Explanation / Answer
Answer:
39. The table below depicts the association between orange juice consumption with 4-year incidence of coronary heart disease (CHD) in a cohort study of 4,000 people.
Orange Juice
CHD
No CHD
TOTAL
4 glasses per day
900
1560
2,460
< 4 glasses per day
900
640
1,540
TOTAL
1800
2,200
4,000
a. Calculate and interpret the cumulative incidence (risk) of CHD among those who consume 4 glasses of orange juice per day. Please round your final answers to the hundredths place.
Risk ratio = 900/2460 =0.37
b. Calculate and interpret the cumulative incidence (risk) of CHD among those who consume < 4 glasses of orange juice per day. Please round your final answers to the hundredths place.
Risk ratio = 900/1540 =0.58
c. Calculate the relative risk (RR) of acquiring CHD, using those who consume < 4 glasses of orange juice per day as the referent group. Please round your final answers for each to the hundredths place.
Relative Risk =0.37/0.58 = 0.64
d. Provide an interpretation to your answer in part c.
1-0.64=0.36
People who consume 4 glasses of orange juice per day are 0.36 times less (or 36% less) acquiring CHD than who consume < 4 glasses of orange juice per day.
Orange Juice
CHD
No CHD
TOTAL
4 glasses per day
900
1560
2,460
< 4 glasses per day
900
640
1,540
TOTAL
1800
2,200
4,000
Related Questions
drjack9650@gmail.com
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.