Fig. 1

Enrollment Summary, with Phase 1 (blue) representing the first stage of participant recruitment based on initial patient lists from the Sexual Health Clinic, and Phase 2 (yellow) representing a secondary stage of recruitment based on a list of Spanish-speaking patients of the mobile unit. Phase 1 includes those who accessed the van at a time when PrEP was offered, while Phase 2 included a supplementary group of patients who still utilized the mobile unit but may have accessed only STI testing