Three documents about cold therapy after knee replacement are sorted by evidence type and level, then summed up in one sentence, in the evidence basics exercise NU300 sets around Unit 7. Searches like "nu 300 unit 7 assignment example", "nu300 unit 7 sample" and "nu300 unit 7 example" land here.
What a finished NU300 Unit 7 evidence basics exercise looks like
A completed worksheet of three pages. The top section states a practice question in plain form: for adults after total knee replacement, does a motorized cold device reduce pain or blood loss more than ice packs? A search box records the database, CINAHL, the subject headings and keywords used, and the number of results before and after limits. The main table lists three retrieved documents: the Cochrane systematic review by Adie and colleagues on cryotherapy after knee replacement, a single randomized trial comparing a motorized device with ice, shown as [author, year], and the device manufacturer's product brochure. Columns record whether each is primary research, secondary research or not research at all, its level on a seven-level hierarchy, and what it can support. A bottom-line box closes the worksheet in one sentence.
How a NU300 Unit 7 example is structured
Built as an exercise rather than a paper, the worksheet shows its reasoning in boxes a reader can check quickly. The question is written first, in a structured form naming population, intervention, comparison and outcome, because the search terms come from it. The search box follows so the retrieval can be repeated. The systematic review sits at the top of the hierarchy and is classified as secondary research; its authors rated the evidence low or very low and judged the benefits possibly too small to justify routine use. The single trial is primary research at a lower level, informative but not decisive alone. The brochure is classified as not research, and the worksheet explains why a product claim cannot rank. The bottom line states that current evidence does not show the motorized device outperforming ice, while naming patient comfort as a legitimate factor.
A question in four parts
Adults after total knee replacement, motorized cold device, ice packs, pain and blood loss. Writing the question in those four parts produces the search terms directly.
A search someone could repeat
CINAHL, subject headings and keywords, results before and after limits for date and language. The box is short, and it lets an instructor rerun the retrieval and check the choices.
The review at the top
Adie and colleagues' Cochrane review is secondary research at the highest level. Its authors judged the evidence low or very low in quality, and the worksheet reports that verdict rather than a headline.
One trial, one level down
A randomized trial comparing a motorized device with ice is primary research. The worksheet notes what a single trial can suggest and why it cannot settle the question on its own.
A brochure that cannot rank
The manufacturer's claims are classified as not research. The worksheet explains the difference between a product description and a study, which is the distinction the exercise exists to teach.
Where marks go in NU300 Unit 7
Classification carries most of the grade on an evidence exercise like this one, so a worksheet that places a manufacturer's brochure on the hierarchy, or calls a systematic review primary research, forfeits the points that matter most. Accuracy about what a source concluded counts nearly as much. Reporting that a review found cold therapy effective, when its authors described small benefits on low-quality evidence, overstates the finding. The search should be reproducible: a database named, terms listed, limits stated. Questions written too broadly, such as asking whether cold therapy helps surgery patients, make the search unmanageable and the classification vague. A bottom line should say what the evidence supports and stop there, since the exercise introduces appraisal rather than asking for a practice change.
Get a NU300 Unit 7 example written to your instructions
Bring a practice question from your unit, even loosely worded, plus the Unit 7 worksheet or instructions and the rubric. The exercise returns with the question structured, the search recorded and each source classified by type and level, in 24-48h. Nothing is charged for the first one you request.
NU300 Unit 7 questions, answered
Which evidence hierarchy should I use?
The one in your course materials. Many nursing programs use a seven-level pyramid with systematic reviews at the top and expert opinion at the base, while others use a five-level model. Name the hierarchy, cite it, and apply it consistently. The classification matters more than which model you choose, as long as your instructor recognizes it.
Can I choose a practice question from my own unit?
Usually yes, and questions from real practice tend to produce better worksheets because the stakes are clear. Keep the question tight enough for a manageable search: one population, one intervention, one comparison, one or two outcomes. Avoid questions whose answer depends on a local policy rather than on research, since the exercise is about locating and classifying published evidence.
What if my search finds no systematic review?
Report that honestly and classify what you did find. Many nursing questions have no review yet, and a worksheet showing a careful search with trials and qualitative studies at lower levels demonstrates the skill just as well. State in the bottom line that the evidence base is limited, and what kind of study would strengthen it.