USMLE® Step 2 CK · Biostatistics & Epidemiology · Topic BIO-MEAS-02
Measures of risk & treatment effect — RR, OR, NNT
Measures of risk & treatment effect — RR, OR, NNT (BIO-MEAS-02) in USMLE® Step 2 CK Biostatistics & Epidemiology (USMLE® Step 2 CK Review Book p. 70). Guideline basis: Consolidated Standards of Reporting Trials 2025 Statement. Covers: Relative risk & odds ratio, Absolute risk reduction & number needed to treat, Number needed to harm & the benefit-harm trade-off, Vaccine efficacy calculation. Practice 22 QuestionBank questions, ChartWalk bedside clinical algorithms, FlashCards, and ImageBank on TheCodexes.com. Understand beyond your boards.
- Topic Code
- BIO-MEAS-02
- Chapter
- Biostatistics & Epidemiology
- Review Book Page
- p. 70
- QuestionBank Items
- 22 questions
Primary Guideline / Source: Consolidated Standards of Reporting Trials 2025 Statement
Key Clinical Sections
- Relative risk & odds ratio
- Absolute risk reduction & number needed to treat
- Number needed to harm & the benefit-harm trade-off
- Vaccine efficacy calculation