|
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
|
