Ho, Man-Wai; Tu, Wanzhu; Ghosh, Pulak; Tiwari, Ram C. - In: Journal of the American Statistical Association 108 (2013) 501, pp. 48-68
In cluster randomized trials, patients seen by the same physician are randomized to the same treatment arm as a group. Besides the natural clustering of patients due to cluster/group randomization, interactions between an individual patient and the attending physician within the group could just...