Quantitative Research Designs—Part 1 #Solved

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.

 

Discussion: 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.

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.

Question to be answered

1.Post the topic you selected, references for the two sources you identified, and the quantitative research design used in each.

 2. Critique the appropriateness of the design used and justify your comments with information from the Learning Resources.

3.Discuss the ramifications of choosing an inappropriate design for a research study.