Zambia study aims to improve HIV care delivery

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: Inclusion criteria for the time and motion study are: * Patient-facing or patient-supporting service provider at the study site (patient-supporting providers include data clerks, pharmacists, etc.) * Directly or indirectly involved in the site's implementation of ART and DSD models * Employed in current role at the study site for at least six months * Provides written informed consent to participate Inclusion criteria for provider interviews are: * Direct or indirect service provider at the study site (indirect providers include supervisors, technical advisors, etc.) * Directly or indirectly involved in the site's implementation of ART and DSD models * Employed in current role at the study site for at least six months * Provides written informed consent to participate. Inclusion criteria for the patient survey are: * Living with HIV and on ART for at least six months at the study site * ≥ 18 years old (18 and older considered adult for research purposes in Zambia) * Enrolled in a specified model of care (including conventional care) up to the target number of participants for that model and have received at least one medication refill under this model * Provide written informed consent to participate. Inclusion criteria for the testing survey are: * Undergoing HIV testing at the study site or other testing site within the catchment area * ≥ 18 years old (18 and older considered adult for research purposes in Zambia) * Provide written informed consent to participate. Exclusion Criteria: Exclusion criteria for the time and motion study are: ● None. Exclusion criteria for provider interviews are: ● None. Exclusion criteria for the patient survey are: * Unable to communicate in any of the languages into which the questionnaire has been translated or that is known to the research assistant * Not physically, mentally, or emotionally able to participate in the study, in the opinion of the investigators or study staff. * Unwilling to take the time required to complete the questionnaire on the day of consent. Exclusion criteria for the testing survey are: * Unable to communicate in any of the languages into which the questionnaire has been translated or that is known to the research assistant * Not physically, mentally, or emotionally able to participate in the study, in the opinion of the investigators or study staff. * Unwilling to take the time required to complete the questionnaire on the day of consent.