Table 4.
Receiver operating characteristic analysis for each parameter in differentiating KCS from KC.
| AUROC | 95% CI | Cutoff | Sensitivity (%) | Specificity (%) | |
|---|---|---|---|---|---|
| Scansys | |||||
| KCP | 0.983 | 0.940–0.998 | > 69.25 | 96.08 | 95.77 |
| Pentacam | |||||
| BAD-D | 0.999 | 0.969–1.000 | > 4.195 | 98.04 | 100 |
| IS-value | 0.967 | 0.918–0.991 | > 1.935 | 92.16 | 95.77 |
| KISA | 0.981 | 0.938–0.997 | > 42.642 | 94.12 | 94.37 |
| ISV | 0.995 | 0.961–1.000 | > 37 | 100 | 95.77 |
| IVA | 0.994 | 0.960–1.000 | > 0.315 | 96.08 | 95.77 |
| KI | 0.986 | 0.946–0.999 | > 1.095 | 94.12 | 94.37 |
| CKI | 0.955 | 0.902–0.984 | > 1.025 | 90.20 | 97.18 |
| IHA | 0.823 | 0.748–0.899 | > 11.55 | 82.35 | 71.83 |
| IHD | 0.996 | 0.962–1.000 | > 0.0425 | 96.08 | 98.59 |
| Corvis ST | |||||
| CBI | 0.984 | 0.942–0.998 | > 0.69 | 98.04 | 92.96 |
| TBI | 0.861 | 0.794–0.927 | > 0.999 | 94.12 | 74.65 |
| SPA1 | 0.903 | 0.846–0.959 | ≤ 82.846 | 86.27 | 85.92 |
| DA ratio (2 mm) | 0.868 | 0.798–0.939 | > 5.039 | 76.47 | 88.73 |
| Integrated radius | 0.906 | 0.852–0.959 | > 10.074 | 80.39 | 88.73 |
KCS keratoconus suspect, KC keratoconus, AUROC area under the receiver operating characteristic curve, CI confidence interval.