Evaluation of In-House ELISA for Antirabies Antibodies Detection in Domestic Canine

Table 7

Interassay agreement among three ELISA kits with RFFIT.

Methods	Pusvetma vs. RFFIT		Platelia II vs. RFFIT		BukTi-Vet vs. RFFIT
	Coeff.	95% C.I	Coeff.	95% CI	Coeff.	95% CI
Cohen’s kappa	0.64	0.35–0.93	0.72	0.49–0.95	0.80	0.58–1
Scott’s pi	0.64	0.35–0.94	0.71	0.47–0.95	0.80	0.58–1
Krippendorff’s alpha	0.64	0.35–0.94	0.72	0.47–0.96	0.80	0.58–1
Gwet’s AC1	0.84	0.69–0.99	0.83	0.68–0.99	0.91	0.79–1
Brennan–Prediger	0.78	0.59–0.97	0.79	0.61–0.97	0.87	0.73–1
Percent agreement	0.89	0.79–0.98	0.89	0.80–0.90	0.94	0.86–1

Note. Altman benchmark for agreement coefficients [21]: very good (0.8–1), good (0.6–0.8), moderate (0.4–0.6), fair (0.2–0.4), and poor (<0.2).