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Table 1 Demographic dataa

From: Computed tomographic assessment of lung weights in trauma patients with early posttraumatic lung dysfunction

Patient demographics ALI Reference ventilated Reference spontaneous
Number of patients 78 43 31
Median agens 42 (23 to 51) 27 (21 to 45) 32 (22 to 44)
Sex (male/female)b 61/17 37/6 19/12
Median heightb, cm 176 (173 to 180) 175 (170 to 183) 174 (168 to 183)
Median weightb, kg 80 (74 to 90) 75 (70 to 82) 73 (59 to 85)
Median Body Mass Indexb, kg m-2 26 (23 to 28) 24 (23 to 26) 23 (21 to 24)
Median PaO2/FiO2, mmHg 169 (95 to 240) 560 (506 to 616)d n.a.
Median Lung Injury Score 2.3 (2.0 to 3.0) n.a. n.a.
Median Injury Severity Scorec 36 (29 to 48) 20 (12 to 26)d 12 (6 to 16)d,e
Median AIS-T 4 (4 to 4) n.a. n.a.
Median Thoracic Trauma Severity Scoreb 11 (9 to 14) n.a. n.a.
Median Glasgow Coma Scale scorec 11 (4 to 15) 11 (7 to 15) 15 (15 to 15)d,e
Median volume of intravenous fluids c, ml 2,000 (1,125 to 3,000) 1,000 (500 to 1,500)d 1,000 (500 to 1,000)d
Median time to CTns, min 122 (90 to 207) 105 (79 to 129) 100 (81 to 136)
Median ventilator-free daysb 17 (4 to 23) 27 (19 to 27) n.a.
Median ICU-free daysb 7 (0 to 17) 22 (10 to 26) n.a.
  1. aAll values are given as medians with interquartile ranges. ALI, patients with acute lung injury at admission; reference ventilated, mechanically ventilated patients with normal lungs; reference spontaneous, spontaneously breathing patients with normal lungs; Body Mass Index, weight in kilograms divided by the square of the height in meters; PaO2/FiO2, ratio of arterial partial pressure of oxygen to fraction of inspired oxygen; AIS-T, Abbreviated Injury Scale of the Thorax; time to CT, interval between trauma and computed tomography (CT); ventilator-free days, number of days without mechanical ventilation within a period of 28 days; ICU, intensive care unit; ICU-free days, number of days without ICU treatment within a period of 28 days; n.a., not applicable; ns, not significant. Positive end-expiratory pressure (PEEP) was 10 cmH2O in all mechanically ventilated patients except for five; in three patients, PEEP >10 cmH2O was already applied before admission and two patients were spontaneously breathing during CT. bNo statistical test performed. cP < 0.001 for the Kruskal-Wallis test over all groups. dP < 0.001 versus ALI. eP < 0.05 versus reference ventilated group.