HIV Clinic-Based Intervention to Improve ART Adherence and Prevent HIV Transmission

This study examines the effect of an HIV clinic-based multi-component intervention on HIV patients' subsequent viral load status and attendance for HIV primary care. The intervention has clinic-wide and targeted components. The clinic-wide components are given to all HIV patients when they attend clinic for primary care and include: (1) patient behavioral screening used by providers in the clinical care of patients and (2) dissemination of palm cards which contain messages about the importance of adhering to antiretroviral therapy (ART), coming to clinic regularly, and safer sex. The targeted components focus on patients whose viral loads exceed 1000 copies/mL. Targeted components include: (1) an interactive computer-based intervention (CBI) completed twice (separated by 2-4 months) by patients at the clinic and (2) referral for one-on-one counseling from trained project Health Coaches if the patient's viral load does not show a 1-log reduction after the first CBI or remains above 200 copies/mL after two administrations of the CBI. Patients are not individually randomly assigned to arms. The multi-component intervention is evaluated using a group-randomized design. Clinics were randomized to either Panel A or Panel B with the intent of equating the two panels on the percentage of patients with suppressed viral load prior to implementing the intervention. Three clinics (Panel A) begin intervention activities, and the other three clinics (Panel B) delay onset of all intervention activities for 16 months and thus serve as a concurrent control group during that 16-month period. This enables between-panel comparisons of the outcomes during this time interval. The primary analytic cohort for the group-randomized analysis will be all patients in Panel A and Panel B whose viral load exceeds 1000 copies/mL who have a scheduled primary care appointment during a 7-month enrollment period. Viral load eligible patients in Panel A will be part of the analytic cohort regardless of whether they enroll in the CBI or not. These viral load eligible patients represent the group of patients who are targeted for the main intervention components (CBI and counseling) and, accordingly, will comprise the denominator (estimated to be 2,794) for the primary analysis of the viral load and clinic attendance outcomes. Each cohort member in Panel A is followed for 9 months for purpose of delivering the intervention and assessing the outcomes. Each cohort member in Panel B is followed for 9 months for purpose of assessing the outcomes. Two secondary levels of analysis will also be performed. First, analysis will be performed focusing on all patients in Panel A clinics who have a viral load over 1000 copies/mL and received at least one administration of the CBI ("as-treated" approach). Outcomes of these patients will be compared to patients in Panel B whose viral load exceeds 1000 copies/mL during the recruitment period. Second, an analysis will be performed at the clinic-wide level including all patients in Panel A clinics regardless of viral load level who are scheduled for primary care during the recruitment period. Outcomes of these patients will be compared to all patients in Panel B scheduled for primary care visits during the recruitment period.