Table 7. Overall performance characteristics of the IHC test in boa constrictors.
|
Overall samples (1990-2011)
|
IHC Test Performance Characteristics (%)
|
Lower 95% CI | Upper 95% CI | ||||
|---|---|---|---|---|---|---|---|
| H&E + | H&E - | Total IHC Test results | Sensitivity | 83.3 | 75.8 | 90.9 | |
| IHC + | 50 | 1 | 51 | Specificity | 97.1 | 93.6 | 100 |
| IHC - | 10 | 33 | 43 | Positive predicted value | 98.0 | 95.2 | 100 |
| Total H&E test results | 60 | 34 | 94 | Negative predicted value | 76.7 | 68.2 | 85.3 |
| False positive | 2.9 | ||||||
| False negative | 16.7 | ||||||
The positive and negative predictive values were calculated based on the prevalence (64%) of the sample set.