JAMAevidence Users' Guides to the Medical Literature

Understanding Bias and Random Error in Medical Research With Dr Furukawa

How to Use a Patient Management Recommendation: Clinical Practice Guidelines and Decision Analyses With Dr Agoritsas

Evidence-Based Practitioners and Evidence-Based Care With Dr Wilson

Teachers' Guides to the Users' Guides

Assessing the Strength of Recommendations: The GRADE Approach With Dr Vandvik

Understanding and Applying the Results of a Systematic Review With Dr Murad

Fixed-Effects and Random-Effects Models With Dr Murad

Adjusted Analyses in Studies Addressing Therapy and Harm With Dr Agoritsas

Spectrum Bias With Dr Reem A. Mustafa

Discrimination and Calibration of Clinical Prediction Models With Dr Alba

How to Interpret and Use a Clinical Practice Guideline or Recommendation With Dr Gordon Guyatt and Dr Brignardello-Petersen

Measuring Agreement Beyond Chance With Dr Thomas McGinn

Correlation and Regression With Dr Jaeschke

Economic Analysis With Dr Paul Moayyedi

Misleading Presentations of Clinical Trial Results with Dr Victor Montori

Surrogate Outcomes from the Users' Guides to the Medical Literature

How to Read Articles That Use Machine Learning With Yun Liu, PhD

Cluster Randomized Trials: Evaluating Treatments Applied to Groups With William J. Meurer, MD

Dose-Finding Trials: Optimizing Phase 2 Data in the Drug Development Process with Dr Kert Viele

Noninferiority Trials: Is a New Treatment Almost as Effective as Another? with Dr Amy Kaji

Decision-making and the Patient with Dr Victor Montori

JAMA Guide to Statistics and Methods

Applying Results to Individual Patients with Dr Thomas Agoritsas

How to Use a Subgroup Analysis with Dr Gordon Guyatt