Data collection
Investigators chose participating sites for the MOMs study based on the extent to which they: 1) provide BUP to pregnant individuals in an office-based setting, 2) offer BUP treatment following delivery for ≥12 months, and 3) have sufficient clinic enrollment to support the target study randomization rate. To be considered a good candidate for the study, a site must have indicated utilizing a model of care in which close collaboration existed between prenatal care and addiction treatment providers and, where possible, treatment was integrated. Twenty-two potential sites submitted Site Selection Surveys, resulting in the selection of 12 sites to participate in the study; the most common reasons for site exclusion were: 1) inadequate enrollment of BUP-SL-maintained pregnant individuals; 2) minimal clinical trials experience; and/or 3) minimal resources to implement the trial (additional information regarding site selection available in 