Table 4

Comparison of variables and outcomes between the pretrauma, interim trauma and post-trauma center establishment periods in the ATDB

VariablesPretrauma center; 2010–2012 (n=94)Interim trauma center; 2013–2014 (n=45)Post-trauma center; 2015–2016 (n=21)P values
Covariates
 Age49.5 (35.8–62)48 (33–59)48 (39.5–62)0.462
 Sex, male55 (58.5)24 (53.3)14 (66.7)0.589
 SBP at admission, mm Hg92 (70–112.5)100 (75–123)110 (100–128)0.014
 GCS at admission13 (5.75–15)14 (4–15)12 (5.5–15)0.982
 Pelvic AIS5 (4–5)4 (4–5)5 (4–5)0.736
 Head AIS0 (0–0)0 (0–2.5)0 (0–3)0.153
 Thorax AIS3 (0–3)2 (0–3)0 (0–3)0.657
 Abdomen AIS0 (0–3)0 (0–3)1 (0–3)0.387
 ISS34 (25–41.5)34 (29–46.5)34 (25–46.5)0.658
 Transfer, yes56 (59.6)19 (42.2)13 (61.9)0.124
Outcomes
 Hospital LOS, days36 (2–85)24 (3–73)52 (26.5–73.5)0.449
 ICU LOS, days16 (7.5–36.5) (n=65)9 (6.25–19.25) (n=20)3.5 (1.75–20.75) (n=10)0.027
 Ventilator, days15.5 (8.25–29.5) (n=52)11 (3.5–22.75) (n=24)13.5 (4–59.75) (n=14)0.495
 Mortality36 (38.3)18 (40.0)5 (23.8)0.404
  • All continuous variables were shown as a median (IQR) and compared by Kruskal-Wallis test.

  • All categorical variables were shown as a number (percentage) and compared by χ2 test for trend.

  • AIS, Abbreviated Injury Scale; ATDB, Ajou Trauma Data Bank; GCS, Glasgow Coma Scale; ICU, intensive care unit; ISS, Injury Severity Score; LOS, length of stay; SBP, systolic blood pressure.