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Comparison of clinical and ventilator data by survival status |
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| Parameter |
Survivors (n = 29) |
Nonsurvivors (n = 21) |
P valuea |
|
|
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| Demographics |
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| Age (years) (mean ± standard deviation) |
55 ± 18 |
56 ± 14 |
0.76 |
| Gender (% male) |
55 |
57 |
0.89 |
| Race (% Caucasian) |
59 |
67 |
0.44 |
| Sepsis as acute lung injury risk (%) |
28 |
57 |
0.04 |
| Clinical variables (mean ± standard deviation) |
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| Simplified Acute Physiology Score II |
42 ± 13 |
52 ± 13 |
0.02 |
| Acute Physiology and Chronic Health Evaluation II |
21 ± 6 |
24 ± 6 |
0.14 |
| Lung injury score |
2.9 ± 0.5 |
2.7 ± 0.6 |
0.32 |
| Ventilator variables |
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| Plateau pressure (cmH2O) |
26 ± 8 |
24 ± 5 |
0.48 |
| Quasistatic respiratory compliance (ml/cmH2O) |
32 ± 10 |
30 ± 11 |
0.60 |
| PaO2/FiO2 ratio |
150 ± 65 |
162 ± 82 |
0.54 |
| Oxygenation index |
14 ± 10 |
12 ± 8 |
0.50 |
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aComparisons were made using chi-square analysis for dichotomous predictor variables and using an unpaired t test for continuous predictor variables. | |||
McClintock et al. Critical Care 2008 12:R41 doi:10.1186/cc6846 |
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