Skip to main content

Table 3 Specificity and 95% Wilson’s confidence intervals of the P22 ELISA for detecting antibodies against the Mycobacterium tuberculosis complex at two cut-off points in different host species from Norway (A) and Spain (B)

From: Specificity of serological test for detection of tuberculosis in cattle, goats, sheep and pigs under different epidemiological situations

  

Cut-off 100%

Cut-off 150%

Species

N° of animals

Na

Spb

Na

Spb

A)

 Cattle

500

20*

96 (93.9–97.4)

3

99.4 (98.3–99.8)

 Goat

100

22*

78 (68.9–85)

3*

97 (91.6–99)

 Sheep

100

4

96 (90.2–98.4)

0

100 (96.3–100)

 Pig

100

0

100 (96.3–100)

0

100 (96.3–100)

 Total

800

    

B)

 Cattle

1014

76*

92.50 (90.7–94)

20

98 (97–98.7)

 Goat

123

85*

30.9 (23.4–39.5)

54*

56.1 (47.3–64.6)

 Sheep

394

22

94.4 (91.7–96.3)

7

98.23 (96.4–99.1)

 Pig

100

0

100 (86.2–100)

0

100 (86.2–100)

 Total

1631

    
  1. aNumber of positive animals
  2. b95% Confidence interval for specificity
  3. *Significant difference (p < 0.05) in the proportion of negative animals of each species between Norway and Spain