Design iterations
For site 4, the RCT protocol was simplified. Research processes such as informed consent and questionnaires were shortened, and follow-up was reduced from two caregiver surveys at 3 and 6 months to one at 6 months (see More substantive design changes were implemented for site 5. Instead of an RCT, the model employed direct referral with a pre–post evaluation (see In January–June 2022, we conducted a second phase of the implementation evaluation to understand barriers to and enablers of feasibility in sites 4–5 (