USMLE Step 1 · out loud

Step 1, one clear idea at a time.

Short video lessons I make while studying for Step 1. Every fact is checked against a source, every practice question is original, and every lesson comes with free one-page notes.

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Biostats & Epi · EP 01

Sensitivity and Specificity from Any 2×2 Table

Learn to pull sensitivity and specificity out of any 2×2 table without mixing them up, and why a 90% sensitive, 90% specific test can still leave a positive result at a coin flip. Includes an original practice question and a bedside twist on rapid flu tests.

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Sensitivity and Specificity from Any 2×2 Table · Biostats & Epi EP 01 · about 6 min

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Biostats & Epi

Sensitivity, specificity, predictive values and the rest of Step 1 biostatistics, built from one 2×2 table.

1 lesson

Cardiovascular

Cardiac physiology first, then pathology and drugs.

Coming soon