Fig. 1

The AUC for prediction of NIV failure. H2, H12, and H24 mean the HACOR score collected at 2, 12, and 24 h of NIV. H0–2, H0–12, and H0–24 mean the difference from initiation to 2, 12, and 24 h of NIV, respectively
The AUC for prediction of NIV failure. H2, H12, and H24 mean the HACOR score collected at 2, 12, and 24 h of NIV. H0–2, H0–12, and H0–24 mean the difference from initiation to 2, 12, and 24 h of NIV, respectively