Final Exam_Fall2020(1).pdf - Chapter Final_Fall_2020...

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Chapter: Final_Fall_2020 Multiple Choice 1. Randomization in a clinical trial is defined as which of the following? A) The process by which individuals are coupled into groups for comparison in order to minimize bias and confounding. B) The process by which individuals are assigned a number and are selected through the usage of a pattern which minimizes bias and confounding. C) The process by which individuals are randomly assigned to a treatment or control group which minimizes bias and confounding. D) The process by which individuals are asked to volunteer for a study which minimizes bias and confounding.
2. A researcher wants to determine the sensitivity of mammograms to determine how effective they are at diagnosing women who have breast cancer. Assume the researcher obtained the above results from a study, calculate and interpret the sensitivity of mammograms for detecting breast cancer. Frequency of Breast Cancer Cases Frequency of Non-Cancer Cases Frequency of Individuals Who Screened Positive 12 Frequency of Individuals Who Screened Negative 6 77 5

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