Study Design and Critical Appraisal
Recognise research designs, sources of bias and whether evidence supports the conclusion.
How to prepare for the MRCGP AKT
Build broad current clinical knowledge, then rehearse evidence interpretation and the ethical, administrative, statutory and regulatory decisions unique to UK primary care.
Core concepts
Concept 1
Quantitative and qualitative designs, randomisation, systematic review, bias, confounding, validity and applicability.
Exam cue: Name the exact decision and time point before reviewing the options.
Concept 2
Identify the question, population, design and outcome before judging effect, limitations and relevance to primary care.
Exam cue: Separate the decisive clinical, numerical or governance fact from plausible background detail.
Concept 3
Separate association from causation and statistical significance from a clinically useful patient benefit.
Exam cue: Choose the safest proportionate action for UK general practice and include follow-up or escalation where relevant.
Concept 4
Apply current UK guidance and patient context while accepting that the most appropriate answer may be no investigation, prescription or referral.
Risk pitfalls and guardrails
Choosing a conclusion from an abstract or p-value without examining design, bias, effect size and applicability.
Guardrail: Do not choose a familiar fact or technically possible action when the stem asks for the most appropriate current UK primary-care decision.
Recalling a guideline fragment without checking whether it applies to this patient, population or administrative context.
Guardrail: Do not choose a familiar fact or technically possible action when the stem asks for the most appropriate current UK primary-care decision.
Choosing an action that is possible but not the most appropriate option at the stated point in care.
Guardrail: Do not choose a familiar fact or technically possible action when the stem asks for the most appropriate current UK primary-care decision.
Memory anchors
Study Design and Critical Appraisal: scope
Quantitative and qualitative designs, randomisation, systematic review, bias, confounding, validity and applicability.
Study Design and Critical Appraisal: primary-care lens
Identify the question, population, design and outcome before judging effect, limitations and relevance to primary care.
Study Design and Critical Appraisal: safety boundary
Separate association from causation and statistical significance from a clinically useful patient benefit.
Study Design and Critical Appraisal: common trap
Choosing a conclusion from an abstract or p-value without examining design, bias, effect size and applicability.
Study Design and Critical Appraisal: AKT decision sequence
Define the exact UK general-practice problem, identify the decisive evidence and safety issue, then choose the most appropriate action for this point in care.
Checkpoint rule
Do the check-up only after you can summarize each concept in one sentence and identify one dangerous pitfall from memory.
Knowledge Check (after reading)
Short check-up to confirm understanding of this module.
Check-up Questions
Researchers randomly allocate adults with hypertension to a new drug or usual care and compare stroke rates. What study design is this?
Investigators identify patients with lung cancer and matched patients without it, then compare past smoking. What design is used?
Answer all questions to submit.
Next step personalized recommendations
Continue learning
Move forward only after this module is stable.
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