In medical research, it is common to see continuous measures grouped into categories to simplify a covariate's relationship with survival and its interpretation. There is no statistical reason for ...

The plots used by Viale et al 2 are one way of exploring prognostic effects of continuous variables nonparametrically, but a more relevant question is that of an interaction between treatment and a ...

The guidance describes FDA’s current recommendations regarding adjusting for covariates in statistical analysis of randomized clinical trials. FDA released its final guidance concerning covariate ...