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Table 1 Baseline characteristics of the patients

From: Acute bilateral mass-occupying lesions in non-penetrating traumatic brain injury: a retrospective study

Characteristics No. Conservative Unilateral Bilateral
No. of patients 80 18 39 23
Male gender 66 (82.5) 18 (100.0) 33 (84.6) 15 (65.2)
Age1 46.4 (15.7) 43.6 (20.0) 49.2 (14.4) 43.9 (16.7)
Cause of injury     
  Traffic 42 (52.5) 10 (55.6) 15 (38.5) 17 (73.9)
  Fall 28 (35.0) 6 (33.3) 17 (43.6) 5 (21.7)
  Violence 4 (5.0) 0 4 (10.3) 0
  Other/missing 6 (7.5) 2 (11.1) 3 (7.7) 1 (4.3)
GCS score on admission1 8.5 (3.8) 9.2 (4.3) 9.2 (3.7) 6.7 (3.3)
AIS-head1 4.4 (0.8) 4.2 (0.9) 4.3 (0.8) 4.7 (0.6)
Pupillary response     
  Present 52 (66.3) 11 (61.1) 31 (79.5) 10 (43.5)
  One absent 6 (7.5) 1 (5.6) 2 (5.1) 3 (13.0)
  Bilateral absent 21 (26.3) 6 (33.3) 5 (12.8) 10 (43.5)
Outcome     
  GOS1 2.9 (1.6) 2.6 (2.0) 3.3 (1.5) 2.5 (1.4)
  Death 25 (31.3) 10 (55.6) 7 (17.9) 8 (34.8)
  Unfavorable (GOS score 1–3) 45 (56.3) 12 (66.7) 16 (41.0) 17 (73.9)
  Missing 3 (3.8) 1 (5.6) 2 (5.1) 0
  1. 1Mean (SD); All other variables: number (%).
  2. GCS, Glasgow Coma Scale; AIS, Abbreviated Injury Scale; GOS, Glasgow Outcome Scale; SD, standard deviation.