| Course | NUR 411 Understanding Research to Guide Nursing Practice |
|---|---|
| Module | Module 3 |
| Paper type | Research design and evidence level analysis |
| Length | About 1,010 words, 6 pages |
| Format | APA 7 student paper |
| School | Southern New Hampshire University |
| Program | RN to BSN |
| Updated | September 2026 |
Free sample paper for NUR 411 Module 3
From Meta-Analysis to Pilot Study: Classifying and Ranking the Evidence on Weighted Blankets in Mental Health Care
[Student Name]
Southern New Hampshire University
NUR 411: Understanding Research to Guide Nursing Practice
Module Three Assignment
[Instructor Name]
[Date]
The organization, setting and figures below are a composite written as a model document. No real employer, client, colleague or patient is described.
From Meta-Analysis to Pilot Study: Classifying and Ranking the Evidence on Weighted Blankets in Mental Health Care
Not all studies deserve the same weight. A single-group pilot and a randomized controlled trial may reach the same conclusion, but they give very different reasons to believe it. This paper classifies the six studies found for 3 North's question about weighted blankets, a composite adult inpatient psychiatric unit, using the evidence levels of the Johns Hopkins evidence-based practice model (Dang et al., 2022). It finds that the evidence includes one meta-analysis of randomized trials and one strong randomized trial, but that most studies conducted in inpatient psychiatric settings sit lower in the hierarchy, which means the strongest evidence and the most relevant evidence are not the same studies.
The Hierarchy Used
The Johns Hopkins model assigns five levels. Level I includes experimental studies, such as randomized controlled trials, and systematic reviews of randomized trials, with or without meta-analysis. Level II covers quasi-experimental work, along with reviews built on such studies alone or on a blend of them and randomized trials. Level III includes nonexperimental studies, systematic reviews that include nonexperimental studies, and qualitative research. Levels IV and V cover nonresearch evidence, such as clinical practice guidelines, consensus statements, literature reviews, quality improvement reports and expert opinion (Dang et al., 2022). Level describes design strength only; a separate quality rating judges how well each study was carried out, which is the work of the next module.
The Studies and Their Levels
Table 1 lists the six studies with their design and level. Each classification was made from the study's methods, not from its title or abstract wording.
Table 1
Weighted Blanket Studies Classified by Design and Johns Hopkins Evidence Level
| Study | Design as determined from methods | Setting and sample | Level |
|---|---|---|---|
| Zhao et al. (2024) | Meta-analysis restricted to randomized trials | 8 trials, 426 patients with mental disorders | I |
| Ekholm et al. (2020) | Randomized controlled trial with active control | 120 outpatients with psychiatric disorders | I |
| Becklund et al. (2021) | Nonrandomized comparison, participants chose group | Inpatient mental health hospital, 61 per group | II |
| Eron et al. (2020) | Systematic review of mixed designs | 8 studies across populations | III |
| Champagne et al. (2015) | Descriptive single-group study | Adult inpatient mental health unit | III |
| Mullen et al. (2008) | Descriptive pilot study without control group | Healthy adult volunteers | III |
Note. Levels follow Dang et al. (2022). Quality ratings are assigned separately in the appraisal module.
Reasoning Behind the Levels
Zhao et al. (2024) searched databases, unpublished sources and trial registries for randomized trials comparing weighted blankets with a control condition in patients with mental disorders, assessed bias with a standard tool and pooled results where possible. Because it includes only randomized trials, it is Level I. Ekholm et al. (2020) used random allocation to put each of 120 outpatients under either a heavy chain blanket or a light look-alike, which gives a credible comparison, so it is also Level I.
Becklund et al. (2021) compared inpatients who chose a weighted blanket with a group who did not use one. There was a comparison, but no random assignment, and the groups were in different settings during measurement, so it is quasi-experimental, Level II. Eron et al. (2020) is a systematic review, a design that sounds strong, but it combined randomized trials with nonexperimental studies, which places it at Level III under this model. Champagne et al. (2015) and Mullen et al. (2008) described outcomes in single groups without a control condition, which is nonexperimental, Level III. Mullen et al. also studied healthy volunteers rather than patients, which limits how far the findings apply to 3 North.
Strength Versus Relevance
The ranking shows a tension. The two Level I sources are the strongest designs, but neither was conducted entirely on inpatient psychiatric units like 3 North: Ekholm et al. studied outpatients over four weeks, and the meta-analysis pooled a range of settings and conditions. The studies closest to the unit's setting, Becklund et al. and Champagne et al., are lower-level designs. This is common in nursing practice questions. It means the unit cannot simply adopt the conclusion of the highest-level study; it must ask whether those findings are likely to hold for acutely ill inpatients over a few nights, and use the lower-level inpatient studies to judge feasibility and safety in that setting.
What Each Level Can and Cannot Show
Each level answers a different kind of question for the unit. The Level I sources can show whether weighted blankets cause a change in sleep or anxiety, because randomization makes the groups comparable at the start; they cannot show how the blankets work on a noisy acute unit over a single night. The Level II study can show that inpatients who chose a blanket reported less anxiety afterward, but because those patients chose it, their improvement may reflect who they were rather than what the blanket did. The Level III studies can show that blankets were used without serious harm in the settings studied and that many users liked them, but without a comparison group they cannot separate the blanket's effect from the effect of rest, attention or time. Knowing these limits in advance keeps the unit from asking any one study to prove more than it can.
What Was Excluded
The search also returned a published protocol for a randomized trial of weighted blankets for agitation in hospitalized patients with dementia, with enrollment still under way, and several product descriptions and news articles. The protocol reports a design but no results, so it is not evidence for the unit's question yet, although it signals that stronger inpatient evidence may soon exist. The product descriptions and news articles are not research and were excluded. Recording what was excluded and why makes the classification transparent.
Conclusion
The evidence on weighted blankets includes two Level I sources, one Level II study and three Level III studies. The strongest designs suggest benefit for sleep and a smaller benefit for anxiety, while the most setting-relevant studies are weaker designs. That pattern tells 3 North where to focus appraisal: on the quality of the Level I trial, and on what the inpatient studies say about safety and acceptance. Module 4 will appraise the randomized trial in detail.
References
Becklund, A. L., Rapp-McCall, L., & Nudo, J. (2021). Using weighted blankets in an inpatient mental health hospital to decrease anxiety. Journal of Integrative Medicine, 19(2), 129-134. https://doi.org/10.1016/j.joim.2020.11.004
Champagne, T., Mullen, B., Dickson, D., & Krishnamurty, S. (2015). Evaluating the safety and effectiveness of the weighted blanket with adults during an inpatient mental health hospitalization. Occupational Therapy in Mental Health, 31(3), 211-233. https://doi.org/10.1080/0164212X.2015.1066220
Dang, D., Dearholt, S. L., Bissett, K., Ascenzi, J., & Whalen, M. (2022). Johns Hopkins evidence-based practice for nurses and healthcare professionals: Model and guidelines (4th ed.). Sigma Theta Tau International.
Ekholm, B., Spulber, S., & Adler, M. (2020). A randomized controlled study of weighted chain blankets for insomnia in psychiatric disorders. Journal of Clinical Sleep Medicine, 16(9), 1567-1577. https://doi.org/10.5664/jcsm.8636
Eron, K., Kohnert, L., Watters, A., Logan, C., Weisner-Rose, M., & Mehler, P. S. (2020). Weighted blanket use: A systematic review. The American Journal of Occupational Therapy, 74(2), Article 7402205010. https://doi.org/10.5014/ajot.2020.037358
Mullen, B., Champagne, T., Krishnamurty, S., Dickson, D., & Gao, R. X. (2008). Exploring the safety and therapeutic effects of deep pressure stimulation using a weighted blanket. Occupational Therapy in Mental Health, 24(1), 65-89. https://doi.org/10.1300/J004v24n01_05
Zhao, Y., Zhang, Q., Liu, Z., Zhao, Z., & Zhu, Q. (2024). Safety and effectiveness of weighted blankets for symptom management in patients with mental disorders: A systematic review and meta-analysis of randomized controlled trials. Complementary Therapies in Medicine, 87, Article 103104. https://doi.org/10.1016/j.ctim.2024.103104
What the NUR 411 Module 3 instructions ask for
The Module 3 assignment in NUR 411 generally asks you to identify the research designs of the studies you found for your PICO question and to place them in an evidence hierarchy. Many prompts name a hierarchy, such as the Johns Hopkins levels or the Melnyk and Fineout-Overholt pyramid, and ask you to justify each level from the study's methods. Some sections ask you to explain the strengths and limitations of each design and what it can and cannot show. Expect a short paper, often with a table, of about three pages in APA 7. Reading each methods section carefully matters more than reading abstracts, because authors sometimes describe their design loosely or generously.
How this NUR 411 Module 3 research design and evidence hierarchy example is built
This example classifies six real studies on weighted blankets in mental health care. It describes the Johns Hopkins hierarchy accurately, separating level from quality, and presents the studies in an APA table with design, setting and level. A reasoning section justifies each level from the methods, including why a nonrandomized comparison is Level II, why a systematic review that mixes designs is Level III and why a volunteer pilot study is both low level and less relevant. It then explains the tension between the strongest studies and the most setting-relevant ones, documents what was excluded from the set and ends with a plan for appraisal in the next module.
Where the NUR 411 Module 3 rubric puts the points
Rubrics for this module usually score the accuracy of design identification, the correct use of the hierarchy, the justification of each level, the discussion of strengths and limitations and the writing. Accuracy is checked closely: graders look for levels assigned from methods, not titles. Justification earns full credit when the writer names the design feature that determines the level, such as random assignment or a control group. Discussion of strengths and limitations is strongest when it addresses relevance to the practice setting as well as design strength. A table is not always required but helps the grader verify each classification quickly, and it will be reused in later modules.
NUR 411 Module 3 help: the mistakes that cost points
The most frequent error in this assignment is copying the design from an abstract or title, for example calling a study a trial when participants chose their group, or ranking every systematic review at the top. Another is assigning levels with no explanation, which leaves the grader unable to tell whether the classification was reasoned or guessed. Some papers confuse level with quality, treating a Level I label as proof that a study is sound. Others ignore relevance, ranking a healthy-volunteer pilot as if it answered a question about acutely ill patients. Read each methods section, name the feature that sets the level, keep level and quality separate and comment on how well each study matches your setting.
Get NUR 411 Module 3 written to your instructions
Send the list of studies you found for your PICO question, the hierarchy your section uses and the Module 3 rubric. A classification with each level justified from the methods is returned in 24 to 48 hours, and the first sample is free. The paper above is an original model document written by our desk, not a submitted student paper and not an official Southern New Hampshire University document.
More NUR 411 papers and related RN to BSN samples
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NUR 411 Module 3 questions, answered
Where can I find a free NUR 411 Module 3 evidence hierarchy sample?
This page has the complete paper free: six real weighted blanket studies classified by design and ranked with the Johns Hopkins levels, with a table, the reasoning for each level, strength versus relevance, exclusions and seven references. Classifications of your own studies can be commissioned.
What are the Johns Hopkins evidence levels?
Level I covers experimental studies and reviews of them; Level II quasi-experimental studies and reviews of them; Level III nonexperimental studies, qualitative studies and reviews that include them; Levels IV and V cover guidelines, consensus, literature reviews, quality improvement and expert opinion.
Is every systematic review Level I?
No. Under the Johns Hopkins model, a systematic review takes its level from the designs it includes. A review of only randomized trials is Level I; one that includes nonexperimental studies is Level III.
What is the difference between evidence level and quality?
Level reflects the strength of the design. Quality reflects how well the study was carried out and reported. A well-conducted Level III study can be more useful than a poorly conducted Level I study.
How do I tell a quasi-experimental study from an RCT?
Check the methods for random assignment. If participants were not randomly assigned to groups, for example because they chose their group, the study is quasi-experimental even if it has a comparison group.