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Table 1 Baseline characteristics by randomized group

From: Effects of intraoperative lung-protective ventilation on clinical outcomes in patients with traumatic brain injury: a randomized controlled trial

  Group A (n = 25) Group B (n = 28) Group C (n = 26) P
Sex, n (%)
  Male 17 (68.0) 20 (71.4) 20 (76.9) 0.772
  Female 8 (32.0) 8 (28.6) 6 (23.1)
Age, years, median (IQR) 55.0 (45.0–60.0) 52.5 (45.3–56.0) 50.0 (43.5–56.0) 0.500
BMI, kg/m2, mean ± SD 23.3 ± 2.1 22.9 ± 1.8 22.6 ± 1.8 0.469
ASA Class, n (%)
  III 9 (36.0) 7 (25.0) 7 (26.9) 0.649
  IV 16 (64.0) 21 (75.0) 19 (73.1)
Glasgow Coma Scale, n (%)a
  13–15 1 (4.0) 3 (10.7) 3 (11.5) 0.911
  9–12 9 (36.0) 9 (32.1) 8 (30.8)
  ≤8 15 (60.0) 16 (57.1) 15 (57.7)
Preoperative hemoglobin, g/dL, median (IQR) 12.0 (10.0–13.0) 13.0 (11.3–13.8) 12.0 (11.0-13.3) 0.462
Intraoperative amount of bleeding, mL, median (IQR) 300.0 (200.0-400.0) 300.0 (200.0-437.5) 300.0 (200.0-500.0) 0.440
Intraoperative fluid infusion volume, mL, median (IQR) 2500.0
(1975.0-3175.0)
2500.0
(2000.0-3000.0)
2500.0
(2000.0-3000.0)
0.810
Operative time, min, median (IQR) 200.0 (150.0-237.5) 177.5 (156.3-199.5) 162.5 (150.0-222.5) 0.379
Anesthesia time, min, median (IQR) 245.0 (200.0-285.0) 220.0 (201.3-253.8) 202.5 (193.8–270.0) 0.508
  1. ASA American Society of Anesthesiologists; BMI body mass index; IQR interquartile range; SD standard deviation
  2. a Glasgow Coma Scale score is an indicator used to assess the coma of a patient. It ranges from 3 to 15, and the higher the score, the better the consciousness. Scores of 13–15, 9–12 and ≤ 8 indicate mild, moderate and severe traumatic brain injury, respectively