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Number of participants active in the study at each observation point plotted by recruitment method and serostatus. Dark lines are HIV-positive subjects, light lines are HIVnegative subjects. Top row shows advertising-based recruitment methods and the bottom row shows in-person recruitment methods. Rg = registration, Bl = baseline, Pt = immediate postintervention, 6=6 months, 12= 12 months, 18=18 months
