Ethical considerations
This trial is registered at ClinicalTrials.gov (NCT03514459) and was approved by the University of Washington Human Subjects Division and the University of Nairobi-Kenyatta National Hospital Ethics and Research Committee. The Mombasa County DOH endorsed this work as a county-supported public health activity, and clinic managers were asked to provide assent for their clinics’ participation. Clinic staff provided verbal assent to participate in structured interviews. The FP register data were fully de-identified, so consent was not required from individual FP clients.