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Table 3 Contingency table with results of all buffy coat samples tested in the PCR, Clinical signs and gram stain; and diagnostic accuracy of clinical observation with PCR

From: Epidemiology of epizootic lymphangitis of carthorses in northern Ethiopia using conventional diagnostic methods and nested polymerase chain reaction

 

Type of diagnostic tests

Clinical observation(N=191)

Gram stain(N=32)

pos

neg

pos

neg

PCR

 Pos

62

22

29

1

 Neg

8

99

1

1

Sensitivity

73.81%

96.67

Specificity

92.52 %

50

Accuracy

AUC

0.832

0.733

95% CI

0. 768-0. 895

0.283-1

p

<0.001

0.028

Agreement

k

0.675

0.467

95% CI

0.570-0.78

-0.160 - 1.000

p

<0.001

0.008

  1. AUC area under rock curve, CI confidence interval, pos positive, neg negative, N number of tested samples