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Table 4 Kappa statistics and positive and negative samples detected by HBsAg rapid tests among serum samples with reactive serology for different infections compared to results obtained by enzyme immunoassay ETI-MAK-4 ®

From: Evaluating HBsAg rapid test performance for different biological samples from low and high infection rate settings & populations

  TP (n) FN (n) FP (n) TN (n) K% (IC%)
Dengue (n = 20)
 Vikia HBsAg® 0 0 0 20 100.00 %
 Imuno-Rápido HBsAg® 0 0 0 20 100.00 %
 Teste rápido HBsAg® 0 0 0 20 100.00 %
T. pallidum (n = 49)
 Vikia HBsAg® 7 2 0 40 85.10 %
 Imuno-Rápido HBsAg® 6 3 0 40 76.60 %
 Teste rápido HBsAg® 7 2 0 40 85.10 %
HIV (n = 69)
 Vikia HBsAg® 11 4 0 54 81.10 %
 Imuno-Rápido HBsAg® 9 6 0 54 70.10 %
 Teste rápido HBsAg® 11 4 1 53 77.00 %
HCV (n = 137)
 Vikia HBsAg® 6 2 0 129 85.00 %
 Imuno-Rápido HBsAg® 6 2 1 128 78.80 %
 Teste rápido HBsAg® 7 1 1 128 86.70 %
  1. Legend: TP True positive, FN False negative, TN True negative, FP False positive, k kappa statistics, n number of observations (biological samples), CI confidence interval