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8 Web Appendix Table. Expected adverse pregnancy outcomes resulting from the cohort decision model comparing each HIV and syphilis testing algorithm for a theoretical cohort of 100,000 pregnant women in Malawi Screening Strategy Total Still Birth Prematurity/ Congenital Neonatal Adverse or Fetal Low Birth HIV MTCT Syphilis Death pregnancy Loss Weight outcomes HIV rapid test screening only 186 4,852 3,112 6,370 1,300 15,820 HIV rapid test & laboratory-based for syphilis 174 4,836 3,105 6,365 1,299 15,779 Single rapid tests for HIV & syphilis 174 4,836 3,104 6,365 1,299 15,778 Dual HIV and syphilis test 51 4,669 3,031 6,319 1,300 15,370

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