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Table 2 Comparison of patients with and without pneumonia, means given with SD and 95% CI, amedian with 25th – 75th percentile

From: Pneumonia in severely injured patients with thoracic trauma: results of a retrospective observational multi-centre study

  No pneumonia Pneumonia p value
N 811 (72.5%) 308 (27.5%)
ISS (pts.) 25.4 ± 11.8 32.6 ± 12.8 <  0.001
RISC II mortality prognosis (%) 8.8 19.5% <  0.001
Hospital mortality (%) 7.9% (6.0–9.7) 10.1% (6.7–13.4) 0.30
AIShead/neck (pts.) 1.4 ± 1.7 2.3 ± 1.9 <  0.001
AISthorax (pts.) 3.5 ± 0.7 3.7 ± 0.8 <  0.001
AISabdomen (pts.) 0.9 ± 1.4 1.0 ± 1.4 0.88
AISextremities (pts.) 1.6 ± 1.4 2.0 ± 1.4 <  0.001
Male (%) 74.4 (71.3–77.4) 80.8 (76.4–85.2) 0.028
Age (yrs.) 47.5 ± 18.5 51.3 ± 18.9 0.002
Penetrating trauma (%) 4.3 (2.9–5.6) 1.3 (0.0–2.6) 0.027
LOS (days) 16.3 ± 15.1 29.1 ± 19.4 <  0.001
ICU (days) 6.3 ± 8.1 21.8 ± 15.4 <  0.001
Time on ventilation (h, all) 58.0 ± 128.2 346.0 ± 306.7 <  0.001
Time on ventilation (h, ventilated patients) 114.9 ± 161.4 368.9 ± 303.1 <  0.001
GOSa 5 (4–5) 4 (3–5) <  0.001
BAL (%) 4.9 (3.4–6.4) 79.5 (75.0–84.1) <  0.001
Aspiration (%) 3.3 (2.1–4.6) 21.1 (16.5–25.7) <  0.001
Tracheotomy (%) 4.6 (3.1–6.0) 44.8 (39.3–50.4) <  0.001
Reintubation (%) 2.5 (1.4–3.5) 17.9 (13.6–22.1) <  0.001
Discharge on ventilation (%) 2.2 (1.2–3.2) 17.3 (13.0–21.5) <  0.001
Worst Horovitz Index 282.9 ± 135.7 137.8 ± 83.4 <  0.001
ECMO (%) 0.4 (0.0–0.8, n = 3) 0.0 (n = 0) 1.0