The following information is used for Q40-Q48. Another epidemiologist reviewed the results and suggested that the invest

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The Following Information Is Used For Q40 Q48 Another Epidemiologist Reviewed The Results And Suggested That The Invest 1 (79.18 KiB) Viewed 92 times

The following information is used for Q40-Q48. Another epidemiologist reviewed the results and suggested that the investigators examine age as another factor of interest because they said that the results might be confounded by age. The investigator then stratified the results by age, displaying them separately for the older subjects (aged 65 and over) and the younger subjects (aged 40-64). Examine the two tables that follow. CHD in Older Subjects (65+ years old) CHD Yes No Total Bald 750 6,750 7,500 1,000 Hair 100 900 Total 850 7,650 8,500 CHD in Younger Subjects (40-64 years old) CHD Yes No Total Bald 25 2,475 2.500 Hair 90 8,910 9,000 Total 11S 11,385 11,500 Compare the stratified relative risks with each other, and with the overall (unstratified) relative risk you calculated. These results suggest that the association between baldness and CHD is confounded by age. True False QUESTION 49 2 pc An investigator would like to assess the association of melanoma (skin cancer) and exposure to infrared skin tanning by using a hospital-based case-control study. Hospitalized individuals with melanoma (cases) will be compared with hospitalized patients without melanoma (controls). This hospital, located in a low-income area of the city, is famous nationwide for its expertise in melanoma. Individuals with melanoma (cases) from all over the country go to that hospital to get the highest quality care. However, this hospital is not as well known for treating any other medical conditions. Therefore, cases for this study will likely come from all over the country, and controls will be mostly local, low-income individuals. What type of bias do believe may be present? Selection bias Information bias No bias is present QUESTION 50 2 pc A case-control study was conducted to assess the association between passive smoking (exposure) and asthma (outcome). Newly diagnosed asthmatic individuals (cases) were compared with a random sample of individuals without asthma (controls) in regards to exposure to smoke from smokers at home or in the workplace for the previous 10 years, What type of bias do believe may be present? Selection bias Information bias No bias is present Click Save and Submit to save and submit Chek Sme All Answers to see all answers. Save All Answers