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Study designs

Topic 4 DQ 2

Describe the characteristics and design of a cohort study. Based on a disease or health condition identified from the “2020 LHI Topics” on the Healthy People 2020 website, or an article from the GCU library, discuss a real example of a cohort study (include the link to the article in your post to the forum). Include the participants, exposures or treatment groups, timeframe, and outcomes that were measured. Why is a cohort study described as an “observational” study rather than an “experimental” study design?

Topic 5 DQ 1

Describe the common characteristics and design of a case-control study. Discuss the three important features when it comes to selecting cases and controls, and identify a situation when one of these might be violated. Discuss the limitations of using questionnaires for determining exposure status and provide examples of alternative strategies for collecting this information in a case-control study. PUB 540 Principles of epidemiology.

Topic 5 DQ 2

Discuss the strengths and weaknesses of cross-sectional studies and examples of how they can be “descriptive” or “analytic” study designs. Discuss an example of a disease where survival could influence the association between a possible exposure and the disease when measured with a cross-sectional study. Do not discuss examples used in the textbook

Topic 6 DQ 1

Differentiate between association and causation using the causal guidelines. Discuss which of the guidelines you think is the most difficult to establish. Discuss the four types of causal relationships and use an example not listed in the textbook to describe each relationship. PUB 540 Principles of epidemiology.

Topic 6 DQ 2

Explain the difference between relative riskattributable risk, and population attributable risk. Provide an example (not from the textbook) of how each type of risk is used in epidemiology. How would you propose using population attributable risk to advocate for a health policy or intervention relative to your health interest?

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