Guiteras, Raymond P.; Levine, David I.; Polley, Thomas H. - In: Development Engineering 1 (2016), pp. 12-25
In many randomized trials, subjects enter the sample sequentially. Because the covariates for all units are not known in advance, standard methods of stratification do not apply. We describe and assess the method of DA-optimal sequential allocation (Atkinson, 1982) for balancing stratification...
