The selection of suitable outcomes and sample size calculation are critical factors in the design of a randomised controlled trial (RCT). The goal of this study was to identify the range of outcomes ...

1. Röhrig B, du Prel JB, Blettner M: Study design in medical research – Part 2 of a series on evaluation of scientific publications [Studiendesign in der medizinischen Forschung. Teil 2 der Serie zur ...

Choosing the proper sample size for an investigation is one of the crucial jobs required of a statistician. Regardless of whether the statistician is deciding the number of patients to select in a ...

In epidemiologic studies and disease prevention trials, interest often involves estimation of the relationship between some disease endpoints and individual exposure. In some studies, due to the ...