Table 4.

Multivariate analysis. OR = odds ratio. Probability of NIV success increases by 5.6 times for every 1 g/dL increase in albumin serum level, while presence of pneumonia decreases the success probability by 61.8%.

	OR	95% CI		P-value
		Inf	Sup
Gender	0.566	0.243	1.318	0.187
Age	0.969	0.917	1.023	0.255
SAPS score	0.962	0.921	1.006	0.090
Albumin (g/dL)	5.617	2.242	14.078	0.000
Charlson index	0.938	0.717	1.227	0.639
Pneumonia	0.382	0.161	0.902	0.028
Renal disease	0.760	0.251	2.302	0.628