Impact of HACOR Score on Noninvasive Ventilation Failure in Non-COPD Patients with Acute-on-Chronic Respiratory Failure

Table 3

Odds ratios for NIV failure tested by the HACOR score (per 1-point increment).

	OR (95% CI)	OR (95% CI) under 1000 bootstraps
Before NIV	1.15 (1.04–1.28)	1.15 (1.04–1.31)
1-2 h of NIV	1.99 (1.50–2.64)	1.99 (1.59–3.28)
12 h of NIV	2.14 (1.52–3.02)	2.14 (1.60–6.19)
24 h of NIV	1.53 (1.18–1.98)	1.53 (1.15–3.85)

HACOR, heart rate, acidosis, consciousness, oxygenation, and respiratory rate; OR, odds ratio; CI, confidence interval; NIV, noninvasive ventilation.