Baseline surfactant protein level by clinical risk factor for ALI/ARDS
| Group | N | SP-A (median, IQR) | SP-D (median, IQR) |
|---|---|---|---|
| p value for overall comparison between clinical risk groups based on Kruskall-Wallis test: for SP-A, p=0.003; for SP-D, p<0.0001. | |||
| SP-A=surfactant protein A; SP-D=surfactant protein D. | |||
| Sepsis | 142 | 29 (13–64) | 86 (39–138) |
| Pneumonia | 210 | 39 (20–70) | 113 (51–280) |
| Aspiration | 82 | 26 (12–55) | 59 (31–127) |
| Trauma | 56 | 24 (11–42) | 54 (36–89) |
| Other | 75 | 24 (11–59) | 60 (25–124) |