Table 2.

Reliability at 15′ of rapid immunochromatographic test comparing whole blood/POC and serum/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)

Kappa simple kappa, Ppos positive proportion, Pneg negative proportion, PABAK prevalence-adjusted bias-adjusted kappa, 95% CI confidence interval, n absolute number

^ainter-observer: nurse (blood/POC) and biologist (serum/laboratory)

^bintra-observer: nurse (blood/POC and serum/laboratory)