Figure 1

In the left panel (a), the impact of introducing condom promotion at SHC, an impulsiveness intervention at SHC, and condom promotion campaign, assuming a non-differential (ND) intervention effect (solid lines), and a differential (D) intervention effect (dashed lines) on overall chlamydia prevalence for five consecutive years is shown. On the right panel (b), the impact of introducing condom promotion at SHC, and an impulsiveness intervention at SHC with differential intervention effects, assuming that only individuals who were diagnosed with chlamydia were targeted (CT + , dash-dotted lines), and that only individuals who tested chlamydia negative were targeted (CT−, dotted lines), on overall chlamydia prevalence for five consecutive years is shown. Note that the y-axis starts at 10% to better visualize the differences between the interventions.