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Quantitative Research Designs Part 1
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.
Learning Resources
Note: To access this weeks required library resources, please click on the link to the Course Readings List, found in the Course Materials section of your Syllabus.
Required Readings:
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.
Media
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.
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.
To prepare:
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:
Caregiver stress
Anxiety in children
Sleep apnea
Depression in college freshmen
Rural health care issues
Post-traumatic stress syndrome
Traumatic brain injury in veterans
Health effects of environmental contaminants
Bipolar disorder
End-of-life ethical issues
Alternative medicine
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.
By Day 3
Post 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.
Read a selection of your colleagues responses.
By Day 6
Respond to at least two of your colleagues on two different days in one or more of the following ways:
Ask a probing question, substantiated with additional background information, and evidence.
Share an insight from having read your colleagues postings, synthesizing the information to provide new perspectives.
Offer and support an alternative perspective using readings from the classroom or from your own review of the literature in the Walden Library.
Make a suggestion based on additional evidence drawn from readings or after synthesizing multiple postings.