New – Version 3

We have been working very hard behind the scenes to produce a new version of the online manual that will improve the experience for our subscribers so are pleased to announce ‘Version 3‘. This version has some additional features and improvements which we hope you will find useful. The most important of these are: Predictive … Read more

Limitations of propensity scores

The Experimental design page has been updated with additional information about the considerable limitations of propensity matching in clinical studies. These studies should not be considered as a substitute for a properly conducted prospective trial, and results from them should only be considered as associations, not as implying causality. The increasing prevalence of these types … Read more