Study design
Know when cohort, case-control, cross-sectional, randomised trial, systematic review and qualitative research designs are most useful.
MRCGP AKT evidence in practice and critical appraisal revision
Evidence questions test whether you can interpret research, recognise bias, communicate risk and apply guidance safely in real primary-care decisions.
Quick answer
For AKT evidence in practice revision, prioritise study design, bias, confounding, diagnostic-test interpretation, absolute and relative risk, NNT, NNH, confidence intervals, shared decisions and applying guidance to individual patients.
What to revise first
Bias and confounding
Revise selection bias, recall bias, lead-time bias, length-time bias, attrition, blinding, allocation concealment and confounding.
Diagnostic tests
Link sensitivity, specificity, PPV, NPV and likelihood to real GP decisions, especially when prevalence changes the meaning of a result.
Risk communication
Practise absolute versus relative risk, NNT, NNH, confidence intervals and explaining benefit or harm clearly to patients.
Guidelines in practice
Understand how to apply NICE, CKS and BNF guidance while allowing for multimorbidity, preferences, capacity and local pathways.
Shared decisions
Revise option discussion, benefits and harms, decision aids, uncertainty, health literacy and documenting patient-centred decisions.
Common AKT traps
- Choosing the biggest relative risk reduction when the absolute benefit is small
- Treating a positive screening test as a diagnosis instead of a risk signal needing follow-up
- Ignoring prevalence when interpreting PPV or NPV
- Assuming statistical significance automatically means clinical importance
- Applying a guideline rigidly despite multimorbidity, frailty, pregnancy, capacity or patient preference
- Missing bias in a study because the headline conclusion sounds plausible
Why this topic catches candidates out
The trap is learning formulas in isolation. AKT evidence questions often hide the calculation inside a practical decision: whether a result changes management, how to explain a treatment benefit, or when a guideline does not fit the patient in front of you.
AKT evidence in practice FAQ
What is evidence in practice in the MRCGP AKT?
Evidence in practice is the AKT section covering evidence-based practice, critical appraisal, statistics, data interpretation, study design, diagnostic tests, risk communication and applying evidence safely in GP.
How much of the AKT is evidence-based practice?
RCGP describes the AKT as 80% clinical knowledge, 10% evidence-based practice including evidence interpretation and 10% primary care organisation and management.
What should I revise first for AKT critical appraisal?
Start with study design, bias, confounding, confidence intervals, absolute and relative risk, NNT, NNH, sensitivity, specificity, PPV, NPV, forest plots and patient risk communication.
Is AKT evidence in practice just statistics?
No. Calculations matter, but AKT evidence questions also test how you interpret data, spot bias, communicate risk, use guidelines and make shared decisions in realistic primary-care scenarios.
Official sources
This is revision guidance, not official RCGP advice. Check current RCGP, NICE, CKS, BNF and local guidance for clinical decisions. Last reviewed June 2026.
October sitting
Oct 26
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days
Keep moving, even on tired days.
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