Table 3. Sensitivity, specificity, and Kappa values of serological tests compared with blood culture (the gold standard) for brucellosis diagnosis.

Test	Sensitivity % (95% CI)	Specificity % (95% CI)	Kappa ƙ (95% CI)
Wright (a titer ≥ 1:200)	81.82 (65.61–91.39)	71.74 (57.42–82.68)	0.52 (0.30–0.74)
IgM ELISA	33.33 (19.75–50.39)	84.78 (71.78–92.43)	0.19 (-0.001, 0.39)
Total ELISA (IgG+IgM)	96.88 (84.26–99.45)	30.23 (18.60–45.11)	0.24 (0.08, 0.40)
IgG ELISA	94.29 (80.84–99.30)	56.63% (45.29–67.47)	0.12 (-0.01 to 0.25)

Note: ELISA, enzyme-linked immunosorbent assay; CI, confidence interval.