Question 9 In a case-control study examining the relationship between hypertension and myocardial infarction, there were...
Question 9
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In a case-control study examining the relationship between hypertension and myocardial infarction, there were 20,000 participants. Half of the study subjects had hypertension. Among those with hypertension, 180 had a myocardial infarction. Among those who did not have hypertension, only 30 had a myocardial infarction. When you set up the two by two table, what is d?
180
9820
30
9970
210
19790
Question 10
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In a case-control study examining the relationship between hypertension and myocardial infarction, there were 20,000 participants. Half of the study subjects had hypertension. Among those with hypertension, 180 had a myocardial infarction. Among those who did not have hypertension, only 30 had a myocardial infarction. When you set up the two by two table, what is b+d?
180
9820
30
9970
210
19790
Question 11
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In a case-control study examining the relationship between hypertension and myocardial infarction, there were 20,000 participants. Half of the study subjects had hypertension. Among those with hypertension, 180 had a myocardial infarction. Among those who did not have hypertension, only 30 had a myocardial infarction. What is the odds ratio?
Those with hypertension have 6 times the risk of developing a myocardial infarction compared to those without hypertension.
Those with hypertension have 6 times the odds of developing a myocardial infarction compared to those without hypertension.
Those with hypertension have 6 times the odds of having a myocardial infarction compared to those without hypertension.
Those with hypertension have 6 times the risk of having a myocardial infarction compared to those without hypertension.
Question 12
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A five-year study was conducted to examine the relationship between dark chocolate consumption and heart disease. Participants were assessed each year. Those who ate dark chocolate contributed a total of 15,000 person-years, while those who did not eat dark chocolate contributed 20,000 person-years. 300 of those who ate dark chocolate developed heart disease, while 700 of those who did not eat dark chocolate developed heart disease. What is the rate ratio?
Those who ate dark chocolate had 0.43 times the risk of developing heart disease compared to those who did not.
Those who ate dark chocolate had 0.32 times the risk of developing heart disease compared to those who did not.
Those who ate dark chocolate had 1.75 times the risk of developing heart disease compared to those who did not.
Those who ate dark chocolate had 3.11 times the risk of developing heart disease compared to those who did not.
Homework Answers
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Question 9
In a case-control
study examining the relationship between hypertension and
myocardial infarction, there were...
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In a cohort study exploring the relationship between acute myocardial infarction and hypertension, the study investigators enrolled 10,000 people with hypertension and 10,000 people without hypertension. All study participants were healthy and had no previous history of myocardial infarction. The investigators followed the subjects until the subject developed a MI or 15 years elapsed, whichever came first. 180 of the subjects with hypertension and 30 subjects without hypertension developed Ml during the course of the study. If no Ml developed...
In a cohort study exploring the relationship between acute myocardial infarction and hypertension, the study investigators...
In a cohort study exploring the relationship between acute myocardial infarction and hypertension, the study investigators enrolled 10,000 people with hypertension and 10,000 people without hypertension. All study participants were healthy and had no previous history of myocardial infarction. The investigators followed the subjects until the subject developed a MI or 15 years elapsed, whichever came first. 180 of the subjects with hypertension and 30 subjects without hypertension developed MI during the course of the study. If no MI developed...
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Consider the following data from a study examining the relationship between smoking behaviour and 20-year survival status of 1314 women (Appleton et al. 1996). Status after 20 years Dead Alive Smoker 139 443 Non-smoker 230 502 Total 369 945 Total 582 732 1314 (a) Determine each of the following: (i) The percentage of the smoker group who died in 20 years. (ii) The proportion of the non-smoker group who died in 20 years. (iii) The risk of death for...
In a cohort study exploring the relationship between acute myocardial infarction and hypertension, the study investigators enrolled 10,000 people with hypertension and 10,000 people without hypertension. All study participants were healthy and had no previous history of myocardial infarction. The investigators followed the subjects until the subject developed a MI or 15 years elapsed, whichever came first. 180 of the subjects with hypertension and 30 subjects without hypertension developed Ml during the course of the study. If no Ml developed...
In a cohort study exploring the relationship between acute myocardial infarction and hypertension, the study investigators enrolled 10,000 people with hypertension and 10,000 people without hypertension. All study participants were healthy and had no previous history of myocardial infarction. The investigators followed the subjects until the subject developed a MI or 15 years elapsed, whichever came first. 180 of the subjects with hypertension and 30 subjects without hypertension developed MI during the course of the study. If no MI developed...
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