Table 1

Demographic and injury characteristics of the study population according to designation level of the definitive care trauma centre*

CharacterisitcEntire cohortTrauma centre level; no. (%)
IIIIIIIV
No. of patients732 (100)285 (38.9)208 (28.4)189 (25.8)50 (6.8)
Female sex211 (28.8)80 (28.1)56 (26.9)59 (31.2)16 (32.0)
Age, yr
 16–54519 (70.9)213 (74.7)148 (71.2)127 (67.2)31 (62.0)
 55–6490 (12.3)28 (9.8)29 (13.9)26 (13.8)7 (14.0)
 65–7472 (9.8)31 (10.9)18 (8.7)17 (9.0)6 (12.0)
 ≥ 7551 (7.0)9 (3.2)8 (3.9)19 (10.1)6 (12.0)
Mechanism of injury
 Motor vehicle collision423 (57.8)143 (50.2)141 (67.8)112 (59.3)27 (54.0)
 Fall57 (7.8)4 (1.4)4 (2.1)11 (5.8)7 (14.0)
 Penetrating Injury184 (25.1)19 (6.7)15 (7.2)41 (21.7)11 (22.0)
 Blunt object and others68 (9.3)97 (34.0)35 (16.8)25 (13.2)5 (10.0)
SBP, mm Hg
 < 5049 (6.7)18 (6.3)15 (7.2)16 (8.5)0 (0)
 50–75279 (38.1)109 (38.3)76 (36.5)79 (41.8)15 (30.0)
 76–89404 (55.2)158 (55.4)117 (56.3)94 (49.7)35 (70.0)
GCS score
 3–8193 (26.4)92 (32.3)62 (29.8)31 (16.4)9 (18.0)
 9–1275 (10.2)37 (12.9)19 (9.1)15 (7.9)2 (4.0)
 13–15464 (63.4)156 (54.7)127 (61.1)143 (75.7)39 (78.0)
Body region of the most severe injury
 Head179 (24.5)79 (27.7)59 (28.4)34 (18.0)7 (14.0)
 Thorax225 (30.7)99 (34.7)63 (30.3)51 (27.0)12 (24.0)
 Abdomen220 (30.1)66 (23.2)52 (25.0)77 (40.7)25 (50.0)
 Spine19 (2.6)12 (4.2)5 (26.3)1 (0.5)1 (2.0)
 Extremities89 (12.2)9 (3.2)8 (3.8)26 (13.8)5 (10.0)
Maximum AIS to the trunk, neck and limbs
 1–2169 (45.7)12 (5.7)16 (5.7)24 (13.0)14 (28.0)
 354 (14.6)67 (38.8)109 (38.8)64 (34.6)20 (40.0)
 454 (14.6)83 (34.9)98 (34.9)66 (35.7)12 (24.0)
 5–693 (25.1)40 (19.8)58 (20.6)31 (16.8)4 (8.0)
Maximum AIS to the head
 1–266 (9.2)76 (47.5)45 (38.5)39 (50.0)9 (60.0)
 3260 (36.2)16 (10.0)22 (18.8)15 (19.2)1 (6.7)
 4259 (36.1)24 (15.0)12 (10.3)14 (18.0)4 (26.7)
 5–6133 (18.5)44 (27.5)38 (32.5)10 (12.8)1 (6.7)
Cardiopathies and coagulopathies96 (13.1)25 (8.8)38 (18.3)30 (15.9)3 (6.0)
Residential remoteness
 Metropolitain277 (41.0)178 (64.0)50 (24.9)42 (17.5)7 (16.3)
 Other regions§117 (17.3)42 (15.1)66 (32.8)9 (5.9)0 (0)
 Agglomerations79 (11.7)9 (3.2)31 (15.4)29 (19.0)10 (23.3)
 Small town and rural areas**202 (29.9)49 (17.6)54 (26.9)73 (47.7)26 (60.5)
  • AIS = Abbreviated Injury Scale; GCS = Glasgow Coma Scale; SBP = systolic blood pressure.

  • * Data simulated using multiple imputation

  • Data missing for 57 patients.

  • Population size > 1 000 000.

  • § Population size 100 000–1 000 000.

  • Population size 10 000–100 000.

  • ** Population size < 10 000.