Sample Size Calculation for a Hypothesis Test

POTS is a chronic autonomic disorder characterized by excessive orthostatic tachycardia and multisystem symptoms that affects an estimated 0.1% to 1% of the US population. Author Satish Raj, MD, MSCI, of University of Calgary Cumming School of Medicine joins JAMA Deputy Editor Kr ...  Show more

Naltrexone, acamprosate, disulfiram, and topiramate are effective but underused medications for treatment of alcohol use disorder. Author Stephen Holt, MD, MS, of Yale School of Medicine joins JAMA Deputy Editor Kristin Walter, MD, MS, to discuss first-line pharmacotherapy for al ...  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. 

Today’s episode of Uncertain is about the ways that studies can leave us overconfident and how “just-so stories” can make us feel overly certain about results that are still a work in progress. And sometimes studies get misleading results because of random error or weird samples ...  Show more

Normal Curves is a podcast about sexy science & serious statistics. Ever try to make sense of a scientific study and the numbers behind it? Listen in to a lively conversation between two stats-savvy friends who break it all down with humor and clarity. Professors Regina Nu ...

Medical news can be exciting or controversial. However, the key to any research is its validity through statistical analysis. Professor Chris Schmid, is the Head of Biostatistics at Brown University, and shares his wealth of knowledge how to interpret medical studies.Contact Dr. ...  Show more