Skip to main content

Table 2 Reliability at 15′ of rapid immunochromatographic test comparing whole blood/POC and serum/laboratory

From: Accuracy and reliability of an NS1 rapid immunochromatographic test for DENV-1 diagnosis at point of care and in the laboratory

  Kappa Ppos Pneg PABAK
Inter-observera (n = 135) 0.81 94% 86.7% 0.83
(95% CI) (0.73–0.88) (90.6–97.3) (79.6–93.8)  
Intra-observerb (n = 137) 0.82 94.2% 87.6% 0.84
(95% CI) (0.75–0.89) (90.9–97.5) (80.8–94.5)  
  1. Kappa simple kappa, Ppos positive proportion, Pneg negative proportion, PABAK prevalence-adjusted bias-adjusted kappa, 95% CI confidence interval, n absolute number
  2. ainter-observer: nurse (blood/POC) and biologist (serum/laboratory)
  3. bintra-observer: nurse (blood/POC and serum/laboratory)