Table 5.
Fibrosis | FibroScan (kPa) | Sensitivity (%) | Specificity (%) | LR+ | LR− | PPV (%) | NPV (%) |
---|---|---|---|---|---|---|---|
Gold standard: Histology only | |||||||
Stage 4 | 11.8* | 85 | 82.7 | 4.92 | 0.18 | 55 | 95.7 |
18.4 | 60 | 94 | 9.72 | 0.43 | 70.6 | 90.5 | |
20.9 | 50 | 96.3 | 13.5 | 0.52 | 76.9 | 88.6 | |
Stage ≥3 | 7.6 | 86.7 | 67.9 | 2.7 | 0.2 | 68.4 | 86.4 |
9.5* | 73.3 | 82.1 | 4.11 | 0.32 | 76.7 | 79.3 | |
11.9 | 57.8 | 94.6 | 10.79 | 0.45 | 89.7 | 73.6 | |
Stage ≥2 | 7* | 71.4 | 79 | 3.43 | 0.36 | 92 | 46.3 |
8.7 | 58.4 | 91.7 | 7.01 | 0.45 | 95.7 | 40.7 | |
Stage ≥1 | 5.3 | 88.5 | 57 | 2.07 | 0.2 | 93 | 44.4 |
7 | 66.7 | 85.7 | 4.67 | 0.39 | 96.7 | 29.3 | |
Gold standard: Gross nodularity on laparoscopy only | |||||||
Cirrhosis | 11.8 | 76.5 | 78.6 | 3.57 | 0.3 | 41.9 | 94.3 |
14 | 70.6 | 85.7 | 4.94 | 0.34 | 50 | 93.5 | |
20.4* | 64.7 | 95.2 | 13.59 | 0.37 | 73.3 | 93 | |
Gold standard: Histology and/or gross nodularity | |||||||
Cirrhosis | 11.8* | 80 | 85.5 | 5.53 | 0.23 | 64.5 | 92.9 |
14.3 | 60 | 89.5 | 5.7 | 0.45 | 65.2 | 87.2 | |
18.4 | 56 | 96 | 14.2 | 0.46 | 82.4 | 87 |
Sensitivity, specificity, likelihood ratios, and predictive values of FibroScan measurements for all patients (N=101) based upon various gold standards (histology and/or gross nodularity).
Highest accuracy.
- LR+
positive likelihood ratio
- LR–
negative likelihood ratio
- NPV
negative predictive value
- PPV
positive predictive value.
For prevalence of fibrosis and cirrhosis, see Tables 2 and 4.