Quantitative Research Designs
Consider the following facts:
About 1 in 3 adults in the United States has high blood pressure (NHLBI, 2011). In 2009, the rate of death per 100,000 individuals from firearm accidents was 10.2, the rate of death from motor vehicle accidents was 11.2, and the rate of death from poisoning was 13.5 (CDC, 2011).
From 2000 to 2009, maternal mortality rate and Cesarean rates showed a marginally-significant positive correlation when the Cesarean rate exceeded 15% (Volpe, 2011).
Although these statistics were generated from vastly different studies, analyses, and investigations, they all reflect the results of quantitative research because each involves the use of numbers. This week you examine different quantitative research designs. You consider when each design is the most appropriate for a particular research question and the purpose of each.
National Heart, Lung, and Blood Institute. (2011). What is high blood pressure? Retrieved from http://www.nhlbi.nih.gov/health/health-topics/topics/hbp/
Centers for Disease Control and Protection (2011). Fast stats: All injuries. Retrieved from http://www.cdc.gov/nchs/fastats/injury.htm
Volpe, F. (2011). Correlation of Cesarean rates to maternal and infant mortality rates: An ecologic study of official international data. Revista Panamericana De Salud Pública, 29(5), 303–308.
Evaluate the appropriateness of quantitative research designs in existing research studies
Evaluate current literature on a specific health topic
Photo Credit: [Graphs and charts]/[E+]/Getty Images
Note: To access this week’s required library resources, please click on the link to the Course Readings List, found in the Course Materials section of your Syllabus.
Polit, D. F., & Beck, C. T. (2017). Nursing research: Generating and assessing evidence for nursing practice (10th ed.). Philadelphia, PA: Wolters Kluwer.
Chapter 8, “Planning a Nursing Study”This chapter focuses on the necessary steps for planning a research study. It describes different research designs and their key features and discusses how to plan for data collection.
Chapter 9, “Quantitative Research Design”This chapter explores quantitative research in greater depth including the importance of experimental design and the role of randomization in conducting research. The chapter also describes quasi-experimental design and observational research.
Laureate Education (Producer). (2012m). Quantitative research for evidence-based practice. Baltimore, MD: Author.
Note: The approximate length of this media piece is 5 minutes.
In this video, Dr. Kristen Mauk explains specific quantitative research designs, methods, and considerations related to her Doctorate of Nursing Practice (DNP) project. She discusses how she developed her research design and how she used sound quantitative research methods throughout her project.
Accessible player –Downloads–Download Video w/CCDownload AudioDownload Transcript
Quantitative Research Designs
In order to find the best information on a topic, not only should you develop a question and search for resources, but you should also know how to analyze the value of the resources that you identify. There are different ways to evaluate resources, such as using the hierarchy of evidence, which you explored in Week 4 of this course. Another way to evaluate resources is to consider the appropriateness of the research design. Understanding how research designs contribute to the quality of a study is essential for being able to analyze resources when conducting a literature review or locating evidence for practice.
In this Discussion, you consider the different research designs and evaluate how these designs have been used to research a specific topic. You also consider strategies for selecting an appropriate research design.
Review the information in the course texton quantitative research designs. Focus on the information in Box 9.1, “Guidelines for Critiquing Research Designs in Quantitative Studies” located on page 210 of the course text.
Select a topic from the list below and search the Walden Library to find two different quantitative research studies addressing that issue:
Anxiety in children
Depression in college freshmen
Rural health care issues
Post-traumatic stress syndrome
Traumatic brain injury in veterans
Health effects of environmental contaminants
End-of-life ethical issues
For each of the sources that you select, identify the type of quantitative research design used, and evaluate whether it is the most appropriate approach to the research.
Consider the ramifications of choosing an inappropriate design for a research study.
Write about the topic you selected, references for the two sources you identified, and the quantitative research design used in each. Critique the appropriateness of the design used and justify your comments with information from the Learning Resources. Discuss the ramifications of choosing an inappropriate design for a research study.