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Table 1 Cross-tabulation of filarial antigen test results obtained by the Card Test and the Test Strip

From: A comparison of two tests for filarial antigenemia in areas in Sri Lanka and Indonesia with low-level persistence of lymphatic filariasis following mass drug administration

Country No. tested     
    Card Test result
   FTS result Positive Negative Totals
Sri Lanka 852 Positive 18 25 43
   Negative 0 809 809
   Totals 18 834 852
   % Agreement; Kappa score (95 % CI): 97.07 %; 0.578 (0.430–0.725). Chi-square = P <0.0001
Indonesia 778 Positive 38 12 50
   Negative 3 725 728
   Totals 41 737 778
   % Agreement; Kappa score (95 % CI): 98 %; 0.825 (0.739–0.912). Chi-square = P <0.0001
  1. Results shown are for 852 and 778 blood samples from Sri Lanka and Indonesia with valid results with both filarial antigen tests
  2. FTS Filariasis Test Strip