Week 7 Statistics Assignment.docx - 1 Which of the...

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1. Which of the following individuals is likely to be excluded from a clinical trial? A) An individual with other diseases besides the disease of interest. B) An individual whose data is considered to be an outlier. C) An individual of who is considered to be a minority. D) An individual who will have difficulty complying trial protocols.
2. Randomization in a clinical trial is defined as which of the following?
3. Assuming 50,000 individuals in the United States are diagnosed every year, and of those individuals diagnosed with HIV each year, approximately 33,500 individuals diagnosed with HIV are gay or bisexual males. What prevalence of the new HIV cases are from members of the population of gay or bisexual males?
4. Ethnicity (i.e., Hispanic versus non-Hispanic) is best described as which type of variable?
5. 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 5 Frequency of Individuals Who Screened Negative 6 77
A) A total of 66.67% of individuals who have breast cancer test positive for breast cancer when using a mammogram as the primary diagnostic test for breast cancer. B) A total of 93.90% of individuals who have breast cancer test positive for breast cancer when using a mammogram as the primary diagnostic test for breast cancer. C) A total of 70.59% of individuals who have breast cancer test positive for breast cancer when using a mammogram as the primary diagnostic test for breast cancer. D) A total of 92.77% of individuals who have breast cancer test positive for breast cancer when using a mammogram as the primary diagnostic test for breast cancer.

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