<prompt> Calculate positive predictive value of ELISA test for HIV with sensitivity 99, specificity 99. Prevalence of HIV in population is 51000.10703499  <response>: Ref :Parks 23rd edition pg139 Construct a 2x2 table using the above data. 4.95 9.95 0.05 985.05 PPV TP TP FP 4.954.959.950.34 