This is a preview. Log in through your library . Abstract Cluster randomization trials with relatively few clusters have been widely used in recent years for evaluation of health-care strategies. On ...

This paper considers n × m completely randomized factorial experiments in which one treatment combination, labelled 00, is excluded. The aim of the experiments is to compare the effects of having both ...

Data collection is sometimes performed without considering the effect poorly collected data has in the strength of statistical conclusions. When researchers properly design an experiment, they are ...