Many times, research design and methods are chosen simultaneously, depending on the study population, the purpose of the study, the variables, and the time frame within which data on these variables is to be collected.

There are a number of different advantages for using secondary data to answer research questions, such as lower cost and timeliness. However, researchers and public health practitioners must be aware of the challenges and limitations that existing datasets may pose to their research.

For this Discussion, you will select a published study on public health prevalence or incidence that uses secondary data and review its study design and methods.

To prepare:

• Read this week’s Learning Resources.
• Research the Walden Library and select a published study on public health prevalence or incidence that uses secondary data.

By Day 3

Post a 3- to 4-paragraph evaluation of the published study you selected. Include the following:

• A brief description of the study you selected including research question
• An explanation of the study design
• An explanation of the dataset used in study
• Identify dependent and independent variables used
• An evaluation of whether the selected study design, methods, and secondary data sources were the most appropriate (provide your rationale).

Support your post based on the Learning Resources and current literature. Use APA formatting for your Discussion and to cite your resources.

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