Flocks | Sheep clinical status (foot lesions) | No. sheep tested | aprB2 PCR Run and/or Cut-off | Culture Gelatinase Thermolabile (Benign) vs aprB2 PCR | Percentage positive results | ||||||
---|---|---|---|---|---|---|---|---|---|---|---|
Concordant results | Culture +ve | PCR + ve | p value | Kappa | Culture | aprB2 PCR | |||||
+ve | -ve | PCR -ve | Culture -ve | ||||||||
12 to 24 | +ve | 135 | Run 1 / 40 | 7 | 108 | 2 | 18 | 0.0008 | 0.348 | 6.7% | 18.5% |
12 to 24 | +ve | 135 | Run 1 / 35 | 7 | 110 | 2 | 16 | 0.0022 | 0.378 | 6.7% | 17.0% |
12 to 14 | -ve | 35 | Run 1 / 40 | 0 | 33 | 0 | 2 | 0.4795 | 0 | 0.0% | 5.7% |
12 to 14 | -ve | 35 | Run 2 / 40 | 0 | 34 | 0 | 1 | 1 | 0 | 0.0% | 2.9% |
12 to 14 | -ve | 35 | Run 1 / 35 | 0 | 34 | 0 | 1 | 1 | 0 | 0.0% | 2.9% |
12 to 14 | -ve | 35 | Run 2 / 35 | 0 | 34 | 0 | 1 | 1 | 0 | 0.0% | 2.9% |
12 to 14 | -ve & + ve | 72 | Run 1 / 40 | 1 | 60 | 1 | 10 | 0.0159 | 0.112 | 2.8% | 15.3% |
12 to 14 | -ve & + ve | 72 | Run 2 / 40 | 1 | 62 | 1 | 8 | 0.0455 | 0.143 | 2.8% | 12.5% |
12 to 14 | -ve & + ve | 72 | Run 1 / 35 | 1 | 63 | 1 | 7 | 0.0771 | 0.163 | 2.8% | 11.1% |
12 to 14 | -ve & + ve | 72 | Run 2 / 35 | 1 | 63 | 1 | 7 | 0.0771 | 0.163 | 2.8% | 11.1% |
12 to 24 | -ve & + ve | 170 | Run 1 / 40 | 7 | 141 | 2 | 20 | 0.0003 | 0.336 | 5.3% | 15.9% |
12 to 24 | -ve & + ve | 170 | Run 1 / 35 | 7 | 141 | 2 | 17 | 0.0013 | 0.376 | 5.3% | 14.1% |