TABLE 2.

Univariate and multivariate analysis of the comorbidities and parameters associated with non-invasive ventilation success (Total of 177 patients)

	Univariate			Multivariate
	OR	95% CI	p value	OR	95% CI	p value
Comorbidities
Asthma	0.51	0.19–1.36	0.18
COPD	0.95	0.39–2.28	0.91
Heart failure	0.55	0.16–1.87	0.34
Non-chronic renal failure	2.88	0.59–14.01	0.18
Pregnancy	3.28	0.68–15.65	0.13
BMI <30%	0.57	0.30–1.08	0.08
APACHE <15	2.94	1.26–6.87	<0.05
SOFA <7	15.90	3.51–72.06	<0.01
CXRqo <2	2.89	1.35–6.19	<0.01	3.59	1.15–11.19	<0.05
Haemodynamic	12.4	5.67–27.09	<0.01	8.18	2.07–32.30	<0.01
stability No MODS	13.45	6.47–27.97	<0.01
Normal renal function	8.42	1.86–38.09	<0.01

COPD, chronic obstructive pulmonary disease; BMI, body mass index; APACHE II, Acute Physiology and Chronic Health Evaluation II; SOFA, Sequential Organ Failure Assessment scoring at intensive care unit admission; CXRqo, chest X-ray quadrant opacities; MODS, multiple organ dysfunction syndrome. Haemodynamic stability analysed as absence of vasopressor requirement.