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Table 2 Syphilis prevalence among 692* antenatal care attendees in Gaborone, Botswana

From: Syphilis screening in the antenatal care: a cross-sectional study from Botswana

  New attendees n (%) Repeat attendees n (%) All attendees n (%)
RPR positive cases       
   RPR titre ≥8, TPHA positive (HTS) 2 (1) 9 (2) 11 (2)
   RPR titre <8, TPHA positive (LTS) 4 (3) 17 (3) 21 (3)
   Biologically false positive† 2 (1) 12 (2) 14 (2)
RPR negative cases       
   Past or treated syphilis‡ 11 (7) 31 (6) 42 (6)
   Uninfected 138 (88) 466 (87) 604 (87)
Total 157 (100) 535 (100) 692 (100)
  1. RPR, rapid plasma reagin; TPHA, Treponema pallidum haemagglutination assay; HTS, high-titre syphilis; LTS, low-titre syphilis
  2. *Among 546 repeat attendees, 11 were excluded from this analysis because the TPHA was missing.
  3. † TPHA-negative
  4. ‡ TPHA-positive