Table 2.
Predictive effect of increasing IB: LvRs as cut-off values for FGR
| IB: LvR cut-off | TP/FP, n | FN/TN, n | Sensitivity (95% CI) | Specificity (95% CI) | PPV (95% CI) | NPV (95% CI) | Concordance (95% CI) |
|---|---|---|---|---|---|---|---|
| ≥4 | 19/3 | 3/24 | 86.4 (66.7–95.3) | 88.9 (71.9–96.1) | 86.4 (66.7–95.3) | 88.9 (71.9–96.1) | 87.8 (75.8–94.3) |
| ≥4.5 | 9/8 | 5/27 | 64.3 (38.8–83.7) | 77.1 (61.0–87.9) | 52.9 (31.0–73.8) | 84.4 (68.2–93.1) | 73.5 (59.7–83.8) |
| ≥5 | 6/9 | 2/32 | 75.0 (40.9–92.9) | 78.0 (63.3–88.0) | 40.0 (19.8–64.3) | 94.1 (80.9–98.4) | 77.6 (64.1–87.0) |
| ≥5.5 | 5/6 | 1/37 | 83.3 (43.6–97.0) | 86.0 (72.7–93.4) | 45.5 (21.3–72.0) | 97.4 (86.5–99.5) | 85.7 (73.3–92.9) |
| ≥6 | 4/3 | 1/41 | 80.0 (37.6–96.4) | 93.2 (81.8–97.7) | 57.1 (25.0–84.2) | 97.6 (87.7–99.6) | 91.8 (80.8–96.8) |
TP, true positive; FP, false positive; FN, false negative; TN, true negative; PPV, positive predictive value; NPV, negative predictive value.