Table 1. Respondents, eligibility criteria, and data collection methods in a study of gender and Option B+ in Malawi and Uganda.

Type of study participant	Malawi enrollment	Uganda enrollment	Eligibility criteria	Data collection method
PMTCT women	32	32	• ≥ 18 years of age • HIV-positive • Current PMTCT participant • Pregnant or has child < 24 months of age	In-depth interviews
LTFU women	32	16	• ≥ 18 years of age • HIV-positive • Enrolled in PMTCT during current or most recent pregnancy • Has not been to the clinic to collect ART for > 60 days • Pregnant or has child < 24 months of age	In-depth interviews
Health workers	16	17	• ≥ 18 years of age • Provides PMTCT services at one of the study clinics	In-depth interviews
Stakeholders	6	8	• ≥ 18 years of age • Works for an organization that supports or provides PMTCT services	In-depth interviews
Men	8 groups, 77 participants	8 groups, 73 participants	• ≥ 20 years of age • Lives in the catchment area of one of the study clinics	Focus group discussions