Table 4.

Assessment of K and C for the detection of anti-T. gondii IgG in 80 sera. Positive predictive value (PPV), negative predictive value (NPV), area under curve (AUC).

Results	rSAG1 (%)
Sensitivity	98.5
Specificity	100
PPV	98.21
NPV	100
validity	98.075
Relative agreement	81.45
Kappa (95% CI)	0.971 (0.64–0.83)
Standard error	0.028
AUC	1.000
Accuracy	98.77
χ2 = 8.02
p < 0.05