Enamed (Exame Nacional de Avaliação da Formação Médica)
What this exam measures
The Enamed evaluates medical graduates, focusing on clinical reasoning, health policy (SUS), and professional ethics. Although the exam is clinical, the assessment logic is the same as other Enade-family exams: integrated cases, evidence-based decisions, and Brazil's public health system.
Concepts to master
- SUS principles: universality, integrality, equity (doutrinários); decentralization, hierarchization, regionalization, popular participation (organizativos).
- Levels of care: primary (atenção básica, ESF), secondary, tertiary; referral and counter-referral.
- Clinical reasoning: hypothesis-driven history, red flags, sensitivity vs. specificity of tests, pre-test probability.
- Ethics and bioethics: informed consent, confidentiality, autonomy, end-of-life care.
- Epidemiology: incidence vs. prevalence, sensitivity/specificity, PPV/NPV, confounding.
Traps that appear
- Confusing incidence (new cases over time) with prevalence (all existing cases at a point).
- Mixing sensitivity (true positives among diseased) with specificity (true negatives among healthy).
- Assuming a highly sensitive test confirms disease; it is better for ruling out.
- Confusing SUS doutrinários and organizativos principles.
- Ethical questions where the "most correct" answer respects patient autonomy even when clinically convenient options exist.
Worked example
A test has sensitivity 90% and specificity 95% in a population with 1% prevalence. Of 10,000 people: 100 diseased → 90 true positives; 9,900 healthy → 495 false positives. PPV = 90 ÷ (90+495) ≈ 15%. Low prevalence drastically reduces PPV even with good sensitivity.
Rule of thumb
For test questions, ask: "Does this test rule in or rule out?" SnNout (sensitive test, negative result rules out) and SpPin (specific test, positive result rules in).