A study investigating skin cancer examined elderly men in Cairns and Melbourne. It found a skin cancer rate of 2.3 cases...
A study investigating skin cancer examined elderly men in Cairns and Melbourne. It found a skin cancer rate of 2.3 cases/1000 person-years for Cairns men and 0.9 cases/1000 person-years for Melbourne men.
What is the relative risk for skin cancer in Cairns compared to Melbourne?
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A study investigating skin cancer examined elderly men in Cairns and Melbourne. It found a skin cancer rate of 2.3 cases...
A study conducted among 2000 men found the following: At the beginning of the study researchers...
A study conducted among 2000 men found the following: At the beginning of the study researchers found 50 participants has prostate cancer of the remaining 1950 men, 950 were exposed to cyanide and 1000 men were not exposed to cyanide. Further during 5 years of follow up, the researchers found 200 men that were exposed to cynanide developed prostate cancer a 50 men not exposed developed prostate cancer. a) what is the periul prevalence for prostate cancer b) Risk ratio...
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Case Study The following table shows the number of colon cancer deaths and person-years of risk by the frequency of aspirin for males and females. Table 1. Rates of death from colon cancer, according to frequency of aspirin use in the coh patients with illness at enrolment were excluded. Aspirin Use (times per month) 0 1-15 -16 Men Number of Deaths 378 184 127 85 Person-years at risk Death rate per 100.000 Rate ratlo 646,346436,620 389,083 201,636 100 Women...
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In your opinion, which of the below three study design is best to assess the relationship...
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A study conducted among 2000 men found the following: At the beginning of the study researchers found 50 participants has prostate cancer of the remaining 1950 men, 950 were exposed to cyanide and 1000 men were not exposed to cyanide. Further during 5 years of follow up, the researchers found 200 men that were exposed to cynanide developed prostate cancer a 50 men not exposed developed prostate cancer. a) what is the periul prevalence for prostate cancer b) Risk ratio...
A study looking at breast cancer in women compared cases with non-cases, and found that 75/100 cases did not use calcium supplements compared with 25/100 of the non-cases. (+3) RR (+) Control Risk factor/exposure Disease Group Case No calcium supplement 75 Calcium supplement 25 25 75 What does the risk ratio say about the relationship between the use of calcium supplement use and the incidence of breast cancer? there is a negative association between not using Ca supplement and breast...
1 pts A cohort study examined the association between smoking and lung cancer after following 400 smokers and 600 non-smokers for 15 years. At the conclusion of the study the investigators found a relative risk 1. How would you interpret this relative risk? Does the Exposure increase, decrease, or does not increase risk of illness?
I study was conducted to assess whether occupational radiation exposure ated with leukemia in their offspring. The investigators enrolled 9. A case-control among men was associ leu kemia cases, controls without cancer and controls with brain cancer. Why did researchers enroll two different types of control groups? a. To standardize the age of the fathers b. To allow calculation of risk c. To minimize recall bias d. To control for the ecologic fallacy e. None of the above The table...
Lung Cancer & Smoking Case Study A causal relationship between cigarette smoking and lung cancer was first suspected in the 1920s on the basis of clinical observations. To test this apparent association, numerous epidemiologic studies were undertaken between 1930 and 1960. Two studies were conducted by Richard Doll and Austin Bradford Hill in Great Britain The first was a case-control study begun in 1947 comparing the smoking habits of lung cancer patients with the smoking habits of other patients. The...
.
Case Study The following table shows the number of colon cancer deaths and person-years of risk by the frequency of aspirin for males and females. Table 1. Rates of death from colon cancer, according to frequency of aspirin use in the coh patients with illness at enrolment were excluded. Aspirin Use (times per month) 0 1-15 -16 Men Number of Deaths 378 184 127 85 Person-years at risk Death rate per 100.000 Rate ratlo 646,346436,620 389,083 201,636 100 Women...
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