1 April 2019 - The basic premise of a stepped wedge cluster randomised trial is that all clusters start in the ...
7 May 2018 - A previous article in this series assessed the association between two variables. Here, we introduce the concept ...
5 February 2018 - Standard deviations and standard errors are reported routinely in statistical analyses, but the distinction between them is ...
15 January 2018 - Medical researchers often want to find out how medically relevant outcomes are related to other factors. ...