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Table 4 Comparative indicators of the prototype LFT using bacterial isolation (B.I) and PCR

From: Development of a lateral flow test for the rapid detection of Avibacterium paragallinarum in chickens suspected of having infectious coryza

Prototype LFT
Comparative techniques Sensitivity Specificity PPVa NPVb Kappa index
% (95% CI) % (95% CI) % (95% CI) % (95% CI) (95% CI)
B.I 100.0 50.0 65.4 100 0.49
(81.6–100) (29.0–71.0) (46.2–80.6) (70.1–100.0) (0.21–0.78)
PCR 83.9 100.0 100.0 44.4 0.54
(66.4–92.9) (51.0–100.0) (87.1–100.0) (18.9–49.0) (0.17–0.91)
  1. 95% CI Confidence interval at 95%
  2. aPositive predictive value
  3. bNegative predictive value