Preferred syphilis screening strategies under alternate model assumptions and for different willingness-to-pay thresholds.

aHigher coverage annual, 6, and 3 refer to screening 100% of the population every 12, 6, or 3 months, respectively (except for the analysis where uptake was varied from 60–90%). Usual care and usual 6 refer to screening 57% of the population every 12 or 6 months, respectively.bIn the base case, probability of treating a false positive case with prior history of syphilis infection was 0.2; probability of treating a false positive case with no prior history of syphilis infection and all true positive cases was 0.95; syphilis incidence was 4 per 100 person-years (py) in never infected men and 4.8 per 100 py in previously infected men; ART was initiated when CD4 count was