Table 3 Threshold, area under the receiver operating characteristics curves (AUC-ROC), sensitivity, specificity, positive and negative predictive values of EIT derived indices and lung ultrasound score to predict extubation failure
Threshold | AUC-ROC (95% CI) | Sensitivity (%) (95% CI) | Specificity (%) (95% CI) | Predictive values (%) (95% CI) | ||
|---|---|---|---|---|---|---|
Positive | Negative | |||||
H0 | ||||||
LUS | 12 | 0.799 (0.642–0.957) | 61 (43–70) | 92 (75–100) | 95 (83–100) | 50 (39–60) |
GI index | 0.39 | 0.545 (0.346–0.744) | 68 (50–82) | 50 (16–75) | 76 (64–88) | 40 (20–60) |
Surface | 393 | 0.719 (0.543–0.894) | 68 (50–85) | 75 (50–100) | 87 (75–100) | 50 (36–69) |
H2 | ||||||
LUS | 15 | 0.845 (0.657–1.000) | 86 (71–96) | 78 (44–100) | 93 (83–100) | 64 (44–89) |
GI index | 0.41 | 0.760 (0.572–0.947) | 73 (54–88) | 75 (41–100) | 90 (79–100) | 46 (29–70) |
Surface | 347 | 0.726 (0.524–0.928) | 88 (73–100) | 50 (13–88) | 85 (77–96) | 57 (25–100) |
H6 | ||||||
GI index | 0.42 | 0.633 (0.353–0.913) | 82 (68–96) | 57 (14–86) | 88 (79–96) | 44 (18–75) |
Surface | 333 | 0.768 (0.571–0.965) | 79 (64–93) | 71 (29–100) | 92 (83–100) | 46 (25–71) |