- Participants and Intervention: MLH (n = 339) and their school-age children (n = 259) were randomly assigned to receive 1) an intervention of 16 sessions in a cognitive-behavioral, small-group format; or 2) control. MLH and their children were compared to non-HIV-affected families recruited at shopping markets. Participant retention was high: 84% at 6 months, 83% at 12 months, and 78% at 18 months.