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Table 1 Baseline characteristics between success and failure of initial NIV treatment

From: Epidemiology of noninvasive mechanical ventilation in acute respiratory failure - a retrospective population-based study

  NIV with intubation (n=27) NIV success (n=49) P Value
Age median (IQR), years 60(47–75) 70(59–82) 0.035
Female Sex, N (%) 15(56) 20(41) 0.217
Race, Caucasian (%) 20(77) 42(88) 0.002
PaO2/FiO2 ratio, Mean (SD)  
Mean PF ratio 170 (51) 192 (50) 0.088
Lowest PF ratio 91 (52) 149 (68) <0.001
Respiratory rate, mean (SD) 20 (3) 20 (3) 0.769
APACHE III score, median (IQR) 43(33–55) 41(29–55) 0.307
Major indications for NIV, N (%)
Acute on chronic respiratory disorders AECOPD 1(14) 14(29) 0.007
Asthma 0 1(2) 0.999
Other 0 1(2) 0.999
ALI/ARDS 20(74) 4(8) <0.001
Postoperative 1(14) 6(12) 0.999
Congestive heart failure 2(29) 10(20) 0.085
Aspiration 1(4) 1(2) 0.999
Pneumonia 0 2(4) 0.536