Characteristic | ARDS casesnumber = 100 | Controlsnumber = 100 | P Value |
---|---|---|---|
Age | 56 (51, 65) | 59 (51, 65) | 0.97 |
Male | 52 (52%) | 52 (52%) | 1.0 |
Caucasian | 89 (89%) | 79 (79%) | 0.10 |
Current smoker | 35 (35%) | 40 (40%) | 0.56 |
APACHE II | 28 (24, 32) | 28 (24, 32) | 1.0 |
Source of ICU admit | Â | Â | Â |
Emergency room | 27 (27%) | 37 (37%) | 0.027 |
Hospital floor | 40 (40%) | 21 (21%) | Â |
Other hospital | 23 (23%) | 22 (22%) | Â |
Operating room | 9 (9%) | 17 (17%) | Â |
Other | 1 (1%) | 3 (3%) | Â |
Day of ALI onset | Â | Â | Â |
ICU day 1 | 91 (91%) | NA | Â |
ICU day 2 | 9 (9%) | Â | Â |
Mechanical ventilationa | 83 (83%) | 58 (58%) | <0.001 |
Any ventilatory supportb | 89 (89%) | 59 (59%) | <0.001 |
Non-pulmonary organ failure at enrollment | 92 (92%) | 91 (91%) | 1.0 |
Vasopressors at enrollment | 44 (44%) | 43 (43%) | 0.50 |
ICU stay (days) | 9 (5, 13) | 5 (3, 11) | 0.003 |
Ventilator-free days | 18 (2, 24) | 25 (7, 28) | <0.001 |
Hospital mortality | 29 (29%) | 27 (27%) | 0.87 |