Multidisciplinary, multi-institutional collaboration has become a key feature of comparative effectiveness research … (CER), and CER funders have made promotion of these types of collaboration an implicit, and sometimes explicit, goal of … funding. An important challenge in evaluating CER programs is understanding if and how different forms of collaboration are …

clustered regression discontinuity (RD) designs. The theory is grounded in the causal inference and HLM modeling literature, and …