Sample Size Calculation for a Hypothesis Test

Nonspecific low back pain is a leading cause of disability, with most cases lacking a clear anatomic cause. This episode reviews risk factors, diagnosis, and current evidence-based treatments for acute and chronic low back pain. JAMA Deputy Editor Mary M. McDermott, MD, interview ...  Show more

Cyanotic congenital heart diseases occur in approximately 0.2% of live births in the US, but survival to adulthood is common with current surgical interventions. JAMA Associate Editor David Simel, MD, MHS, speaks with author Michael Landzberg, MD, who coauthored a recent review i ...  Show more

One of the most common causes for problems we see in manuscripts at JAMA is an inappropriately calculated study sample size. This seemingly mysterious process is explained by Lynne Stokes, PhD, professor of Statistical Science at Southern Methodist University in Dallas, Texas. 

In this "Breathe Easy Critical Perspective" podcast, Dr. Dominique Pepper interviews Dr. Michael Sjoding. They discuss his NEJM publication about bias in pulse oximetry measurement. Dr. Sjoding is an Assistant Professor in the Division of Pulmonary and Critical Care at the Uni ...

One of the hottest topics in modern physics is trying to understand the scattering of fundamental particles with neither shape nor size - one step up from nothingness. Amazingly, attempts to understand these simple processes theoretically require state-of-the-art mathematics. The ...  Show more

Tomas Kalincik, Head of the Clinical Outcomes Research Unit at the University of Melbourne, and Maria Pia Sormani, Professor of Biostatistics at the University of Genoa, discuss the use of real-world data to compare disease-modifying treatments (DMTs) in multiple sclerosis, inclu ...  Show more