Critical Appraisal Systems for Scientific Evidence
Definition
Critical appraisal refers to the systematic evaluation of clinical research evidence to assess its validity, results, and relevance before applying it to decision-making in healthcare.
Joanna Briggs Institute (JBI) Critical Appraisal Tools
- Purpose: Evaluate methodological quality across various study types (RCTs, cohort studies, case series, qualitative research, etc.).
- Strengths: Detailed checklists tailored to each design; transparent criteria.
- Limitations: Time-consuming; less commonly used in some medical specialties.
GRADE (Grading of Recommendations Assessment, Development and Evaluation)
- Purpose: Rates certainty of evidence and strength of clinical recommendations.
- Strengths: Widely endorsed by WHO, Cochrane, and others; integrates evidence with values/preferences.
- Limitations: Complex for non-specialists; primarily designed for guideline development.
CASP (Critical Appraisal Skills Programme)
- Purpose: Provides structured checklists for evaluating studies, especially qualitative and RCTs.
- Strengths: Easy to use; ideal for teaching; widely adopted in nursing and public health.
- Limitations: May oversimplify complex methodological issues.
AMSTAR (A MeaSurement Tool to Assess systematic Reviews)
- Purpose: Assesses the quality of systematic reviews.
- Strengths: Validated tool; helps distinguish high- from low-quality reviews.
- Limitations: Not applicable to primary studies; requires familiarity with systematic review standards.
SIGN (Scottish Intercollegiate Guidelines Network) Checklists
- Purpose: Appraise study quality for use in clinical guideline development.
- Strengths: Emphasizes study design hierarchy and methodological rigor.
- Limitations: More focused on clinical questions; less adaptable for broader research areas.
Comparative Summary Table
System | Best For | Key Features | Complexity | Widely Used |
---|---|---|---|---|
JBI | Methodological quality | Design-specific checklists | Medium | ✓✓ |
GRADE | Clinical guideline development | Certainty + recommendation strength | High | ✓✓✓ |
CASP | Education and training | User-friendly checklists | Low | ✓✓ |
AMSTAR | Systematic reviews | 16-point validated tool | Medium | ✓✓ |
SIGN | Evidence for guidelines | Evidence level + quality rating | Medium | ✓✓ |
Best Prompts for Critical Appraisal Systems for Scientific Evidence
🔎 General Critical Appraisal
- Critically appraise the following article using the most appropriate checklist based on its study design. Provide strengths, weaknesses, and a summary judgment on its reliability.
[Paste full abstract or article details here]
- What critical appraisal tool should I use for this type of study? It's a [randomized controlled trial / systematic review / qualitative study / cohort study].
- Explain step-by-step how to critically appraise a scientific article, and show how to apply that process to this paper:
[Paste citation or summary]
📋 Joanna Briggs Institute (JBI)
- Use the Joanna Briggs Institute (JBI) checklist to assess the methodological quality of the following [type of study]:
[Insert abstract or key information]
- Generate a completed JBI critical appraisal checklist for a [cohort study / qualitative research / case series] using the following article:
[Insert article]
🌍 GRADE (Grading of Recommendations Assessment, Development and Evaluation)
- Summarize the strength of the evidence in this article using GRADE criteria: risk of bias, inconsistency, indirectness, imprecision, and publication bias.
[Insert abstract or results section]
- Using the GRADE framework, classify the quality of evidence and strength of recommendation for the following clinical practice guideline:
[Insert guideline or summary]
✅ CASP (Critical Appraisal Skills Programme)
- Apply the CASP checklist to this randomized controlled trial and summarize the results of each question.
[Insert study citation or abstract]
- Give a teaching-friendly explanation of how to use the CASP checklist for evaluating a qualitative study. Include examples if possible.
📊 AMSTAR (A MeaSurement Tool to Assess Systematic Reviews)
- Apply the AMSTAR 2 checklist to this systematic review and determine if it is high, moderate, low, or critically low quality.
[Insert systematic review details]
- Explain each domain of the AMSTAR 2 tool in simple terms and show how it is applied in practice.
⚖️ SIGN (Scottish Intercollegiate Guidelines Network)
- Use the SIGN methodology to critically evaluate the following clinical trial for its inclusion in guideline development:
[Insert article summary or results]
- Explain how SIGN levels of evidence differ from GRADE, and when each should be used.
🧠 Meta Appraisal (Advanced)
- Compare the appraisal of the same study using JBI, CASP, and GRADE frameworks. Identify key differences in focus, scoring, and conclusions.
[Insert article]
Tip: These prompts can be used directly in ChatGPT or GPT-4 to train students, conduct systematic reviews, or evaluate clinical articles in your daily practice.