In the seven-level Melnyk and Fineout-Overholt hierarchy, which source occupies Level I when the clinical question asks whether a treatment works?
Choose an answer, then check it.
Evidence-Based Practice & Basic Statistics · Core Topics
Levels of Evidence and Interpreting Research
On this page 3 sections
In 30 seconds
This topic is taught through its practice: 12 practice questions, each with the reasoning behind the answer, and the same idea again in plain words.
Quick check
5 questions here, of 12 in this lesson’s practice set. Answers stay hidden until you check.
A review team identifies 7 similar randomized trials of one intervention and mathematically combines their effect estimates into a single pooled estimate. Which term names that statistical step?
Choose an answer, then check it.
A student's reference list has 12 citations: 8 are textbook chapters and review articles, and the remaining citations are reports written by the investigators who collected and analyzed the data they describe. What term applies to those remaining citations?
Choose an answer, then check it.
In the seven-level hierarchy, a well-designed randomized controlled trial is Level II while a well-designed cohort study is Level IV. This two-level gap exists mainly because:
Choose an answer, then check it.
A unit caring for adults aged 75 and older finds a Level II randomized trial conducted only in healthy adults aged 18 to 40 and a Level IV cohort study conducted in nursing-home residents aged 75 and older, leaving a 35-year gap between the trial's oldest participant and the cohort's youngest. Which statement is most accurate?
Choose an answer, then check it.
Study tools & related lessonsRelated
Educational content only. It is not medical, legal or professional advice. Found an error? Tell us.