The results from single-case design studies with a high or moderate rating are not factored into whether a model meets the HHS criteria unless additional criteria are met. Please read the HHS criteria for evidence-based models for more information.
Sanders, M. R. & Glynn, T. (1981). Training parents in behavioral self-management: An analysis of generalization and maintenance. Journal of Applied Behavior Analysis, 14(3), 223-223.