David Weisburd, Charlotte Gill, Block Randomized Trials at Places: Rethinking the Limitations of Small N Experiments, Journal of Quantitative Criminology, Vol. 30, No. 1 (March 2014), pp. 97-112 ...

The following command shows the fitted model for the four blocks, where the assumption of no interaction forces the fitted values to constant distances apart, representing the assumed constant block ...

The Model degrees of freedom for a randomized complete block are (b-1)+ (t-1), where b= number of block levels and t= number of treatment levels. In this case, (3-1)+ (3-1)=4. Several simple ...

ExpDesign then introduces one of the experiments, which can be simulated in the model, “The Analgesic Effect of Pethidine and Some Analogs,” and gives instructions for designing an experiment.

To illustrate how their method works, the researchers used data from a large-scale policing experiment in Medellín, Colombia. In the experiment, a different research team, led by Daniela Collazos of ...

We conclude that, in view of its robustness against model misspecif ication, Aalen least-squares estimation is attractive for evaluating treatment effects on a survival outcome in randomized ...