This month's MHRI-GHUCCTS Monthly Statistical Seminar Series will be held Friday, January 20th from 12 PM - 1 PM. This series features Dr. Paul Kolm, Associate Director in the Department of Biostatistics and Biomedical Informatics at MedStar Health Research Institute. The topic of this month's seminar will be ​​power and sample size: considerations for determining the number of subjects/patients for a study as well as calculation of sample size.