Shedding Threshold for Positivity (organisms/g) | ||||||||
---|---|---|---|---|---|---|---|---|
≥102 | ≥103 | ≥104 | ≥105 | ≥106 | ≥107 | ≥108 | ||
Paralisa Overall | Sens. | 0.62 | 0.67 | 0.78 | 0.87 | 0.89 | 0.96 | 0.98 |
Spec. | 0.70 | 0.68 | 0.63 | 0.62 | 0.61 | 0.60 | 0.58 | |
PPV | 0.70 | 0.61 | 0.41 | 0.35 | 0.31 | 0.26 | 0.20 | |
NPV | 0.62 | 0.74 | 0.90 | 0.95 | 0.97 | 0.99 | 1.00 | |
PPD-J EU >50 | Sens. | 0.46 | 0.52 | 0.70 | 0.82 | 0.84 | 0.91 | 0.94 |
Spec. | 0.85 | 0.84 | 0.81 | 0.81 | 0.79 | 0.78 | 0.75 | |
PPV | 0.78 | 0.71 | 0.55 | 0.50 | 0.44 | 0.37 | 0.28 | |
NPV | 0.58 | 0.70 | 0.89 | 0.95 | 0.96 | 0.98 | 0.99 | |
PPD-J EU >100 | Sens. | 0.34 | 0.40 | 0.62 | 0.74 | 0.78 | 0.86 | 0.89 |
Spec. | 0.94 | 0.93 | 0.93 | 0.92 | 0.91 | 0.89 | 0.86 | |
PPV | 0.87 | 0.82 | 0.73 | 0.67 | 0.62 | 0.53 | 0.40 | |
NPV | 0.55 | 0.68 | 0.88 | 0.94 | 0.95 | 0.98 | 0.99 | |
PPD-J EU >150 | Sens. | 0.24 | 0.29 | 0.48 | 0.60 | 0.64 | 0.75 | 0.81 |
Spec. | 0.98 | 0.98 | 0.98 | 0.97 | 0.96 | 0.96 | 0.93 | |
PPV | 0.93 | 0.92 | 0.88 | 0.83 | 0.78 | 0.71 | 0.56 | |
NPV | 0.53 | 0.65 | 0.85 | 0.91 | 0.93 | 0.96 | 0.98 |