Figure 2.

Consistency across levels of assignment, intervention, and measurement. Patterns of consistency across study design components are illustrated with eight example studies. Design components included are assignment (i.e., random or non-random allocation to study arms), intervention and/or implementation efforts, and measurement. Studies were grouped by patterns of consistency of levels across design components. The number and proportion of reviewed studies that fall into each consistency pattern are included. ^aSymbols indicate the presence of a design component at a given level. Levels are defined as: ⚫ Organization, e.g., hospital, school. ▲ Provider, e.g., doctor, teacher. ■ Client, e.g., patient, student.