Presentations Research & Evidence-Based Practice 5 — Questions and Answers
Question 1: A policy analyst presents survey data showing 70% of respondents support a new regulation. What critical methodological detail should be disclosed?
- The color scheme used for charts
- Survey response rate and how respondents were sampled (Correct answer)
- The software used to analyze the data
- The length of the survey instrument
Correct answer: Survey response rate and how respondents were sampled
Low response rates or non-random sampling can introduce significant bias, making the 70% figure potentially unrepresentative of the broader population.
Question 2: During a Q&A, an audience member challenges your evidence with a conflicting study. What is the most professional response?
- Dismiss the study as irrelevant without explanation
- Acknowledge the study, note key methodological differences, and explain why your evidence is more applicable (Correct answer)
- Agree with the challenger to avoid conflict
- Promise to email a response after the session to avoid public discussion
Correct answer: Acknowledge the study, note key methodological differences, and explain why your evidence is more applicable
Acknowledging conflicting evidence and explaining methodological differences demonstrates expertise and credibility while advancing the scholarly dialogue.
Question 3: What is publication bias and how should a presenter address it?
- The tendency for journals to reject long articles; acknowledge word limits
- The tendency for positive results to be published more than null results; note this limitation when discussing the literature (Correct answer)
- The preference for visually formatted research; use graphs
- The bias toward citing recent publications; include older foundational studies
Correct answer: The tendency for positive results to be published more than null results; note this limitation when discussing the literature
Publication bias inflates perceived effect sizes in the literature; presenters should acknowledge it so audiences understand the evidence base may overestimate benefits.
Question 4: A presenter claims their intervention is 'evidence-based.' What minimum standard of evidence does this term typically require?
- At least one case study documenting success
- Support from at least one peer-reviewed study using an appropriate research design (Correct answer)
- Endorsement by three or more professional organizations
- A cost-benefit analysis showing positive ROI
Correct answer: Support from at least one peer-reviewed study using an appropriate research design
'Evidence-based' minimally requires peer-reviewed research using rigorous methodology, though higher standards call for multiple studies and systematic reviews.
Question 5: Which approach best handles presenting preliminary or unpublished data to a scientific audience?
- Present it as conclusive to maintain credibility
- Label it clearly as preliminary and describe next validation steps (Correct answer)
- Omit it entirely until publication
- Present it without attribution to protect the research team
Correct answer: Label it clearly as preliminary and describe next validation steps
Clearly labeling data as preliminary and outlining validation steps is transparent and scientifically appropriate, preventing audiences from over-interpreting early findings.
Question 6: A presenter uses anecdotal patient stories alongside clinical trial data. What is the primary purpose of including anecdotes in an evidence-based presentation?
- To replace statistical data that is too complex to explain
- To humanize and contextualize statistical findings, making them more relatable (Correct answer)
- To compensate for a weak study design
- To satisfy journal publication requirements
Correct answer: To humanize and contextualize statistical findings, making them more relatable
Anecdotes give a human face to statistics, helping audiences emotionally connect with findings, but they should supplement rather than replace systematic evidence.
Question 7: When presenting research with a small sample size (n=20), which statement is most appropriate?
- The findings are definitive and ready to implement
- The results are promising but require replication in larger samples before drawing broad conclusions (Correct answer)
- Small samples are never acceptable in evidence-based practice
- The p-value alone determines whether the findings are valid
Correct answer: The results are promising but require replication in larger samples before drawing broad conclusions
Small samples reduce statistical power and generalizability, so findings should be framed as preliminary and directional, pending confirmation in larger studies.
Presentations Research & Evidence-Based Practice 5
A policy analyst presents survey data showing 70% of respondents support a new regulation.
What critical methodological detail should be disclosed?