Reference no: EM134043142

Critical Appraisal Assignment (RCT)

For this assessment select one of the three randomised controlled trials (RCT) provided on Canvas and critique it using the 13 short-answer JBI critical appraisal tool for RCTs (Barker et al., 2023). Your answers must demonstrate understanding of RCT methods and be supported by evidence and references.

What you must do
Choose & read one from the three RCTs provided on the Canvas “Assignments” page. Download the full text and read carefully (research question, eligibility, methods, results, conclusions).
Download the assessment template from Canvas and follow its short-answer structure. Use the JBI checklist paper for interpreting any items you’re unsure about:
Barker TH, Stone JC, Sears K, Klugar M, Tufanaru C, Leonardi-Bee J, Aromataris E, Munn Z. The revised JBI critical appraisal tool for the assessment of risk of bias for randomized controlled trials. JBI Evidence Synthesis. 2023;21(3):494–506.
Answer all 13 JBI questions for your selected RCT. For each question:
Give a direct, evidence-based answer about the trial (yes/no/unclear/not applicable + brief justification).
Support your judgement with direct evidence from the trial (page/section/quote or paraphrase) and with at least one methodological reference (textbook, CONSORT guidance, Cochrane Handbook, JBI paper, or similar) explaining why that feature matters.
If a required detail is not reported in the trial, say so and explain the likely impact on risk of bias.
Reference properly. Use APA 7. Include the RCT you critiqued and all methodological sources you cite.

Formatting & submission:
Use the Canvas template
Keep answers concise but clear (one short paragraph per question, approximately 75–200 words for each question).
Submit by the deadline in Canvas.

JBI short-answer questions (answer each for your chosen RCT)
Question 1: Was true randomization used for assignment of participants to treatment groups?
Question 2: Was allocation to groups concealed?
Question 3: Were treatment groups similar at the baseline?
Question 4: Were participants blind to treatment assignment?
Question 5: Were those delivering the treatment blind to treatment assignment?
Question 6: Were treatment groups treated identically other than the intervention of interest?
. Question 7: Were outcome assessors blind to treatment assignment?
Question 8: Were outcomes measured in the same way for treatment groups?
Question 9: Were outcomes measured in a reliable way?
Question 10: Was follow up complete and if not, were differences between groups in terms of their follow up adequately described and analysed?
Question 11: Were participants analysed in the groups to which they were randomized?
Question 12: Was appropriate statistical analysis used?
Question 13: Was the trial design appropriate and any deviations from the standard RCT design (individual randomization, parallel groups) accounted for in the conduct and analysis of the trial?

How to justify your judgements (evidence & references)
Primary evidence: always cite the trial itself (section, page, table/figure). Example: Methods—Randomisation (p.4), “A computer-generated random sequence...”
Methodological support: for each judgement cite at least one methodological authority explaining why the item matters (e.g., Barker et al. 2023; CONSORT 2010 statement; Cochrane Handbook chapters on RCT bias; standard epidemiology texts). These show you understand why the feature affects bias.
When reporting is absent: state “not reported” and explain the likely consequence (e.g., unclear allocation concealment increases risk of selection bias), with a methodological citation.

Short example (model answer structure for one question)
Q2. Allocation concealment
Answer (trial evidence): The trial reports “allocation envelopes were used” (Methods, p.5) but does not state whether envelopes were sequentially numbered, opaque, or sealed.
Judgement: Allocation concealment — Unclear / Probably high risk. Because the method lacks details (non-sequential/transparent envelopes allow potential foreknowledge), selection bias is possible.
Supporting methodological reference: Barker et al. (2023) explain that adequate concealment (e.g., central randomisation or sequentially numbered, opaque, sealed envelopes) prevents selection bias and is distinct from sequence generation.
(Add full citation list at end.)

Final checklist before submission
I selected only one RCT from the three provided.
I answered all 13 short-answer JBI items in the Canvas template.
Each answer includes: trial evidence + methodological reference.
References are complete and formatted per course style.

Instructions
Answer each question based on your chosen randomized controlled trial (RCT).
Responses should be concise, evidence-based, and explicitly justified using information from the trial report.
Where information is unclear or not reported, state this explicitly.
Provide a full reference list at the end. You require a minimum of 3 references for this assignment, excluding the chosen RCT

Assessment
Question 1 Was true randomization used for the assignment of participants to treatment groups?
Response:
Answer (from the chosen RCT): Describe the randomisation method used. Cite the relevant section/page of the article.
Your Judgement: State whether this constitutes true randomisation. Yes No Unclear N/A
Supporting methodological reference: discuss the potential risk of bias with supporting evidence

Question 2 Was allocation to groups concealed? Response:
Answer (from the chosen RCT): Describe how allocation concealment was achieved. Cite the relevant section/page of the article.
Your Judgement: State whether this constitutes true allocation concealment. Yes No Unclear N/A
If not described, state this and discuss the potential risk of bias.
Supporting methodological reference: discuss the potential risk of bias with supporting evidence

Response:
Answer (from the chosen RCT): Comment on baseline characteristics. Cite the relevant section/page of the article.
Your Judgement: Yes No Unclear N/A
State whether any important imbalances were present and their implications.
Supporting methodological reference: discuss the potential risk of bias with supporting evidence

Question 4 Were participants blind to treatment assignment? Response:
Answer (from the chosen RCT): State whether participant blinding occurred. Cite the relevant section/page of the article.
Your Judgement: Yes No Unclear N/A
Supporting methodological reference: discuss the potential risk of bias with supporting evidence. If blinding was not possible, explain why.

Question 5 Were those delivering the treatment blind to treatment assignment? Response:
Answer (from the chosen RCT): Describe whether clinicians or intervention providers were blinded. Cite the relevant section/page of the article.
Your Judgement: Yes No Unclear N/A
Supporting methodological reference: Discuss the potential risk of bias with supporting evidence.

Question 6 Were treatment groups treated identically, other than the intervention of interest?
Response:
Answer (from the chosen RCT): Describe any additional interventions. Cite the relevant section/page of the article.
Your Judgement: Yes No Unclear N/A
Supporting methodological reference: Discuss whether differences could have influenced outcomes with supporting evidence.

Response:
Answer (from the chosen RCT): State whether outcome assessors were blinded. Cite the relevant section/page of the article.
Your Judgement: Yes No Unclear N/A
Supporting methodological reference: Discuss the potential risk of bias with supporting evidence.

Question 8 Were outcomes measured in the same way for treatment groups? Response:
Answer (from the chosen RCT): Describe outcome measurement methods for each group. Cite the relevant section/page of the article.
Your Judgement: Yes No Unclear N/A
Supporting methodological reference: Discuss the potential risk of bias with supporting evidence.

Question 9 Were outcomes measured in a reliable way? Response:
Answer (from the chosen RCT): Comment on the validity and reliability of outcome measures. Cite the relevant section/page of the article.
Your Judgement: Yes No Unclear N/A
Supporting methodological reference: Discuss the potential risk of bias with supporting evidence.

Question 10 Was follow-up complete and, if not, were differences between groups adequately described and analysed?
Response:
Answer (from the chosen RCT): Report follow-up rates and attrition. Cite the relevant section/page of the article.
Your Judgement: Yes No Unclear N/A
Supporting methodological reference: Discuss whether missing data were balanced and appropriately handled with supporting evidence.

Response:
Answer (from the chosen RCT): State whether an intention-to-treat (ITT) analysis was used. Cite the relevant section/page of the article.
Your Judgement: Yes No Unclear N/A
Supporting methodological reference: discuss implications for bias with supporting evidence.

Question 12 Was appropriate statistical analysis used? Response:
Answer (from the chosen RCT): State the statistical tests used and their suitability for the data and outcomes. Cite the relevant section/page of the article.
Your Judgement: Yes No Unclear N/A
Supporting methodological reference: Discuss handling of confounders, clustering, or missing data if relevant with supporting evidence.

Question 13 Was the trial design appropriate, and were any deviations from standard RCT design accounted for in the conduct and analysis?
Response:
Answer (from the chosen RCT): Identify the trial design (e.g., parallel, cluster, crossover). Cite the relevant section/page of the article.
Your Judgement: Yes No Unclear N/A
Supporting methodological reference: Discuss whether deviations from a standard RCT were justified and appropriately addressed analytically with supporting evidence.