Elements of Quantitative Research: Design and Sampling: NR 505 Week 3 Discussion
Elements of Quantitative Research: Design and Sampling: NR 505 Week 3 Discussion
Elements of Quantitative Research: Design and Sampling: NR 505 Week 3 Discussion
The discussion in Week 3 focuses on two critical aspects of quantitative research studies: design and sampling. The quantitative or qualitative approach or design also applies to EBP projects. Both quantitative and qualitative designs or traditions fall into these two broad categories.
Choose a single-study quantitative research study article relevant to your specialty track and provide the article’s permalink. Then, go over each of the following points.
Determine whether the research study is experimental, quasi-experimental, or non-experimental. Give your reasoning for your response.
Using the nomenclature of X for intervention, O for observation and data collection, and R for random assignment to a research study group, determine the appropriate representation for the research study article you selected.
Determine the type of sampling used in the research study article you chose (probability vs. nonprobability).
Determine one advantage and one disadvantage of the sampling method used (probability vs. nonprobability).
Determine whether the research study article you chose used random assignment to research study groups.
How does the use of random group assignment strengthen the research study design?
Design and Sampling in Quantitative Research: NR 505 Week 3 Discussion SAMPLE
I’ve selected a single quantitative research study article that investigates whether aerobic exercise reduces postpartum depressive symptoms. We will look at mothers who are less than a year postpartum and women who have depressive symptoms as measured by a questionnaire or diagnostic tool throughout this article (Pritchett, Daley, & Jolly, 2017). This is a non-experimental study because there is an intervention but no control over whether or not these postpartum moms exercise or how much they exercise; they must rely on what they report doing and the intensity of their activity.
The intervention included multiple trial groups, each of which included group exercise interventions, exercise counseling, and the freedom for participants to choose their own style of exercise (Pritchett, Daley, & Jolly, 2017).
They set a goal of 30 minutes of moderate activity three to five times per week. This observation/data collection was carried out with the following goals in mind:
NR 505 Week 3 Discussion: Elements of Quantitative Research Design and Sampling
to see if exercise has any effect on reducing depressive symptoms in postpartum women Overall, the study found that exercise is an extremely effective treatment for postpartum depression. Women who chose their own activity, women assigned to exercise groups, and women who received exercise counseling were all randomly assigned (Pritchett, Daley, & Jolly, 2017).
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When weighing probability vs. non-probability for this article, I would go with non-probability because this study is limited to postpartum women, and thus not all postpartum women who are one year postpartum would qualify. Non-probability occurs when not every member of the population has the same chance of being included in the study. This research is only for women who are less than a year postpartum.
One advantage of using non-probability is that the population studied is limited to women who are one year postpartum. The disadvantage is that postpartum depression may last longer than a year in some women. As a result, these ladies are not included in the study.
A random assignment was used in this study to place women in groups, receive counseling, or choose their own exercise. This can help to strengthen the study by focusing on the most effective area, whether it was group activity, individualized exercise, or exercise counseling.
R. V. Pritchett, A. J. Daley, and K. Jolly (2017). Does aerobic exercise help with postpartum depression? British Journal of General Practice, 67, doi:10.3399/bjgp17x692525. (This is a link to another website.) External links are provided.
RESPONSE EXAMPLE
Thank you for your interesting and informative post. While reading it, many light bulbs went off in my head about different ways or many other ways to conduct this type of research. Technology now plays a significant role in fitness. Instead of relying on good faith, having postpartum mothers wear a fit bit or another type of smart watch that can track data such as exercise, steps, and heart rate is a better way to keep track of the actual amount of time spent exercising. If I had designed this research study, I would have improved the EBP proposal because science has already proven that exercise lowers cortisol and increases endorphin release. I would have contrasted exercise with pharmacological interventions to determine which is more beneficial in the long run. Furthermore, for the sample used, I believe that the guidelines should be more specific because a lot can change between just after delivery and one year, and some women cannot begin physical activity right away due to c-sections, which may put those women at a disadvantage.