USMLE Step 3 study guide
USMLE Step 3 · Work through your exam, one topic at a time.
USMLE Step 3 is the final examination in the USMLE sequence leading to a license to practice medicine without supervision. It assesses whether a candidate can apply medical knowledge and understanding of biomedical and clinical science essential for the unsupervised practice of medicine, with emphasis on patient management in ambulatory settings. The content reflects a data-based model of generalist medical practice in the United States: the items and cases mirror clinical situations that a general, as-yet undifferentiated physician might encounter within the context of a specific setting, and the exam provides a final assessment of physicians assuming independent responsibility for delivering general medical care. Examination material is prepared by committees broadly representing the profession, including academic and non-academic practitioners as well as members of state medical licensing boards. Topics on this exam: Foundations of Independent Practice (FIP) and Advanced Clinical Medicine (ACM). The USMLE Step 3 study guide has 2 sections and about 594 words.
01Foundations of Independent Practice (FIP)
FIP tests the physician as a systems thinker. Know study design and measures: incidence vs prevalence, relative risk vs odds ratio, attributable risk, number needed to treat/harm, sensitivity/specificity, predictive values, and how prevalence changes PPV/NPV. Review confidence intervals, p-values, type I/II error, power, intention-to-treat, randomization, blinding, and bias (selection, recall, lead-time, length, confounding). Understand screening principles and the difference between screening and diagnostic testing.
302 words, about 2 min02Advanced Clinical Medicine (ACM)
ACM tests movement from presentation to prioritized differential, risk stratification, and safe management across ambulatory and hospital settings. Know common acute presentations-chest pain, dyspnea, abdominal pain, altered mental status, fever, syncope, GI bleeding, stroke, and sepsis-and major chronic diseases such as diabetes, hypertension, COPD/asthma, CKD, heart failure, CAD, atrial fibrillation, thyroid disease, obesity, and depression. Master initial stabilization, when to escalate care, diagnostic test selection and interpretation (ECG, ABG, chest radiograph, urinalysis, cultures), antimicrobial choice, fluid and electrolyte management, anticoagulation, perioperative risk, and preventive care. Pharmacology is high yield: mechanism, adverse effects, interactions, renal/hepatic dosing, monitoring, pregnancy/lactation safety, and geriatric prescribing.
292 words, about 1 min