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. Author manuscript; available in PMC: 2018 Mar 20.
Published in final edited form as: Annu Rev Public Health. 2017 Mar 20;38:1–22. doi: 10.1146/annurev-publhealth-031816-044215

Figure 4. Roll-Out Randomized Designs.

Figure 4

Symbol “O” refers to implementation as usual, “X*” and “Y*” are introductions on new implementation strategies, and “X” and “Y” are continuation of these strategies over extended periods of time.