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Table 3 Comparison of different diagnostic tests (statistical analysis) taking the results of the serological examination (ELISA) as the gold standard

From: Comparison of different detection methods for Ascaris suum infection on Austrian swine farms

Reference Liver inspectiona Fecal examinationa
ELISA (positive + doubtful results considered as positive) Sens: 23.5 Sens: 8.5
Spec: 87.5 Spec: 100
PPV: 92.3 PPV: 100
κ: 0.037 κ: 0.0025
P: 0.225 P: 0.138
ELISA (only positive results considered as positive) Sens: 27.0 Sens: 9.0
Spec: 89.1 Spec: 96.4
PPV: 84.6 PPV: 91.0
κ: 0.114 κ: 0.035
P: 0.017 P: 0.204
ELISA (doubtful results excluded) Sens: 27.0 Sens: 9.0
Spec: 87.5 Spec: 100
PPV: 91.7 PPV: 100
κ: 0.131 κ: 0.032
P: 0.060 P: 0.126
  1. aSens: sensitivity [%]; Spec: specificity [%]; PPV: positive predictive value [%]. P: Probability associated with κ