Table 3.
FIBROSpect II Overall Performance
| Parameter | Value | 95% confidence interval |
|---|---|---|
| Prevalence (F2–F4) | 84.1% | |
| Sensitivity | 67.2% | 58.1–75.4% |
| Specificity | 73.9% | 51.6–89.9% |
| Accuracy | 68.3% | 60.0–75.7% |
| PPV | 93.2% | 85.7–97.5% |
| NPV | 29.8% | 18.5–43.4% |
Dichotomized test scores from all 145 subjects were used. Scores below 42 were interpreted as consistent with stages 0–1 fibrosis; those equal to or greater than 42 were interpreted as stages 2–4 fibrosis.
- PPV
positive predictive value
- NPV
negative predictive value
.