Data is representative. TEST TYPE: patients positive on both. (1)  Denominator for ANC clients is taken from program data and adjusted for duplicate reporting. (2)  Disaggregation by gestation at testing  is not possible, but most ANC1 is known to occur in the first trimester (82.7% of all ANC in 2014 CDHS). (3) TPHA screening is done at ANC. Reactive cases are referred for RPR but not all attend. Among those who receive RPR, 86% have detectable titer and 14% do not.  Numerator for prevalence  = 86%  total number reactive on TPHA accordingly.  From ANC program data. SOURCE: National programme data. 