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Critical Appraisal

The Critical Appraisal section catches out clinical doctors more than any other part of the FRCEM SBA — not because it's hard, but because it's tested differently from the rest of the paper. This category gives you the focused, exam-ready stats and study-design knowledge needed to score full marks. Inside you'll find a structured guide to passing the FRCEM Critical Appraisal section, a plain-English explanation of p-values, confidence intervals, and the common biases tested, and a breakdown of the most common Critical Appraisal SBA questions with worked examples. You don't need to be a methodologist — you need to recognise study designs, interpret CIs and p-values correctly, spot the half-dozen biases the exam loves, and apply a small set of statistical concepts under time pressure. These guides give you exactly that.

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Critical Appraisal

Experimental Event Rate & Control Event Rate

EM FINAL EXAMS Critical Appraisal · Effect measures Experimental & Control Event Rates (EER & CER) The two raw event rates that…

emfinalexams3 min
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Critical Appraisal

Absolute Risk & Baseline Risk

EM FINAL EXAMS Critical Appraisal · Effect measures Absolute Risk & Baseline Risk The same relative benefit is large in high-risk patients…

emfinalexams3 min
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Critical Appraisal

Diagnostic Accuracy Biases

EM FINAL EXAMS Critical Appraisal · Diagnostics Diagnostic Accuracy Biases The study-design flaws that make a test look better than it really…

emfinalexams3 min
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Critical Appraisal

QUADAS-2

EM FINAL EXAMS Critical Appraisal · Diagnostics QUADAS-2 The standard tool for appraising risk of bias and applicability in diagnostic accuracy studies…

emfinalexams4 min
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Critical Appraisal

Pre- and Post-test Probability & Odds

EM FINAL EXAMS Critical Appraisal · Diagnostics Pre- and Post-test Probability & Odds The chance of disease before a test, updated by…

emfinalexams3 min
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Critical Appraisal

ROC Curve & AUC

EM FINAL EXAMS Critical Appraisal · Diagnostics ROC Curve & AUC How well a test separates disease from no-disease across every possible…

emfinalexams3 min
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Critical Appraisal

PPV & NPV

EM FINAL EXAMS Critical Appraisal · Diagnostics PPV & NPV Given a test result, how likely is disease? — the bedside question,…

emfinalexams3 min
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Critical Appraisal

Reliability & Reproducibility

EM FINAL EXAMS Critical Appraisal · Measurement Reliability & Reproducibility Whether a measurement gives the same answer on repeat — consistency, not…

emfinalexams3 min
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Critical Appraisal

Kappa Statistic

EM FINAL EXAMS Critical Appraisal · Measurement Kappa Statistic (κ) Agreement between two raters, after stripping out the agreement you would expect…

emfinalexams3 min
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Critical Appraisal

Internal vs External Validity

EM FINAL EXAMS Critical Appraisal · Bias & validity Internal vs External Validity Is the result TRUE in the study (internal) —…

emfinalexams4 min

Stop reading. Start revising.

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