# Biostatistics and Ethics — the five-step order

> The order for Step 1 biostats and ethics: decode First Aid first, use the free HY Biostats PDF with the First Aid Guide, use AMBOSS instead of UWorld, then Neil Randy, then NBME Anki in revision.

URL: https://usmlevault.com/blog/biostats.html
Canonical: https://usmlevault.com/blog/biostats.html

## Summary

A five-step method for USMLE Step 1 biostatistics and ethics, built on the argument that biostats is a concept problem wearing a number rather than a maths problem. The contrarian element is step three: UWorld's biostats coverage is not good enough and AMBOSS should be used instead, for ethics as well as biostats. Ethics is treated in the same window as biostats because both are tested as a scenario plus a judgement.

## Key facts

- Step 1: decode the First Aid biostats pages rather than memorising formulas cold; sensitivity and specificity are two different questions about the same 2x2 table
- Step 2: run those pages through the First Aid Guide alongside the free High-Yield Biostats PDF, which gives line-by-line explanations, MCQs on the exact page, and high-yield videos already attached
- Step 3: use AMBOSS rather than UWorld for biostats and ethics; UWorld's coverage of both is thin, and AMBOSS treats them at a deeper level
- Step 4: the Neil Randy high-yield series, both the long-form playlist and the YouTube Shorts playlist
- Step 5: run the biostats cards from the NBME Series Anki deck during the revision phase only, for retrieval speed
- Biostats questions are slow questions; recognition is what preserves the 5 to 7 minutes of spare time needed in every block
- The free PDFs (HY Biostats, biostats workbook, Neil Randy) are in the University section at https://usmlevault.com/university
- Three of the four resources in this method are free

## Covers

step 1 biostats, how to study biostatistics usmle, uworld biostats not enough, amboss biostats, ethics step 1, neil randy biostats, biostats anki, sensitivity specificity step 1

## Source

USMLE Vault — https://usmlevault.com
Author: Dr. Marish Asudani

Updated: 2026-09-02