Table 4 Logistic regression analysis addressing the main risk factors for noninvasive positive pressure ventilation failure

Age (years)

0.97

0.94–0.99

0.015

0.96

0.93–0.99

0.007

Male gender

2.24

0.86–5.83

0.100

Mean arterial pressure (mmHg)

0.98

0.95–1.00

0.037

Heart rate (bpm)

1.02

1.00–1.05

0.037

APACHE II score

1.10

1.00–1.21

0.039

1.13

1.02–1.25

0.018

Arterial pH

0.95

0.89–1.01

0.116

Bicarbonate (mmol/L)

0.87

0.78–0.97

0.009

Arterial lactate (mg/dL)

1.05

0.99–1.10

0.081

Transplantation

10.50

2.00–54.95

0.005

Acute respiratory distress syndrome

2.57

0.68–9.80

0.167