Table 2 Diagnostic accuracy of different diaphragm indicators after extubation including diaphragm thickening fraction (DB), diaphragm excursion (DB), diaphragm excursion fraction, and diaphragm excursion difference
AUC (95% CI) | Youden Index | Cut-off Value | Sensitivity (%) (95% CI) | Specificity (%) (95% CI) | LR+ (95% CI) | LR- (95% CI) | PPV (95% CI) | NPV (95% CI) | |
|---|---|---|---|---|---|---|---|---|---|
DTF (DB) | 0.637 (0.517–0.745) | 0.286 | 0.33 | 61.0 (44.5–75.8) | 67.7 (49.5–82.6) | 1.88 (1.1–3.2) | 0.58 (0.4–0.9) | 69.4 (56.9–79.7) | 59.0 (47.9–69.2) |
DE (DB) | 0.804 (0.703–0.905) | 0.501 | 3.88 | 85.4 (70.1–93.9) | 64.7 (46.4–79.7) | 2.42 (1.5–3.9) | 0.23 (0.1–0.5) | 74.5 (64.5–82.4) | 78.6 (62.7–88.9) |
DEF | 0.815 (0.708–0.895) | 0.501 | 0.44 | 70.73 (54.5–83.9) | 79.41 (62.1–91.3) | 3.44 (1.7–6.8) | 0.37 (0.2–0.6) | 80.6 (67.5–89.2) | 69.2 (57.6–78.9) |
DED | 0.836 (0.732–0.911) | 0.575 | 1.5 | 63.4 (46.9–77.9) | 94.12 (80.3–99.3) | 10.78 (2.8–42.2) | 0.39 (0.3–0.6) | 92.9 (76.9–98.1) | 68.1 (58.6–76.3) |