The randomized controlled clinical trial is an increasingly used method in health services research. Analysis of methodology is needed to accelerate practical implementation of trial results, select ...

Methods We simulated a case–control study, generating 100 data sets for each of 270 different simulation scenarios; varying the number of exposure variables, the correlation between exposures, sample ...

Recent advances in survey sampling have underscored the value of auxiliary variables in estimating finite population means. By incorporating additional information from related variables ...