TABLE 1.

Cross table of Cohen's kappa values^a

Antigen	Kappa value for:
	Provirus	p45	FL-74	EPK211	p15E
Provirus		0.18	0.13	0.08	0.55
p45	0.69b		0.42	0.16	0.21
FL-74	0.47	0.45		0.24	0.12
EPK211	0.47	0.57	0.42		0.06
p15E	0.96	0.70	0.51	0.48

^aShown are the agreement levels of antigen pairs and provirus-antigen pairs. The specificity is >80%.

^bValues in bold type are for experimentally infected cats (n_total = 157), and those in regular type indicate naturally infected cats (n_total = 294).