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Evidence Based Practice Discussion

When nurses have a question about a clinical practice issue that they can turn to the literature to see what scientific evidence is available that addresses their question. However, as discussed in Week 2, not all evidence is created equal. When looking at the literature, it is important to evaluate each research study. Before assumptions can be made about the applicability of a study’s results, specific elements of a research design must be evaluated.

This week, you will examine elements of the strength of a quantitative research study’s design, including sample size, generalizability, statistical analysis and conclusions. Keep in mind all studies have flaws or are not valid for your population. Consequently, one study by itself will not warrant a change in practice. It is important to find a number of studies to support your change in practice.

Post the following:

  • After viewing the Week 3 Webinar: Critical Appraisal of Quantitative Research, complete the Appraisal Guide: Findings of a Quantitative Study in this week’s resources. Of the questions discussed on the second page of the critique form, titled Credibility, which ones were identified in the article reviewed during the webinar? Describe one of the most serious flaws in this study and why it leaves you wondering if the study findings should be used as evidence in an assessment of patient handoff?

Expert Solution Preview

In the critique form titled “Credibility” of the Appraisal Guide: Findings of a Quantitative Study, the following questions were identified in the article reviewed during the webinar:

1. Were the research questions or hypotheses clearly stated?
2. Was the sample size appropriate and justified?
3. Were the data collection methods appropriate and reliable?
4. Were the measurement instruments valid and reliable?
5. Were the statistical methods used appropriate for the research design and data analysis?
6. Were the results clearly presented and interpreted?
7. Were the conclusions supported by the results?

One of the most serious flaws in the study reviewed during the webinar was the inappropriate sample size. The article failed to provide a justification for the chosen sample size, which raises questions about the representativeness and generalizability of the study findings. A small sample size may not accurately reflect the characteristics of the larger population, leading to biased or unreliable results. This flaw leaves us wondering if the study findings should be used as evidence in assessing patient handoff, as they may not be applicable to a broader patient population.

It is important to critically evaluate the credibility of research studies before incorporating their findings into clinical practice. Valid and reliable evidence is crucial to ensure patient safety and optimal outcomes.

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