Table 3

Univariate analysis comparing study cohorts during the first 24 h

1 h2 h3 h24 h
VariableWB:RBC<1 (n=220)WB:RBC≥1 (n=170)P valueWB:RBC<1 (n=208)WB:RBC≥1 (n=182)P valueWB:RBC<1 (n=207)WB:RBC≥1 (n=183)P valueWB:RBC<1 (n=239)WB:RBC≥1 (n=118)P value
Age39370.32539370.17039370.20939360.073
Male, n (%)170 (77.3)138 (81.2)0.382165 (79.3)143 (78.6)0.901168 (80.2)142 (77.6)0.536190 (79.5)118 (78.1)0.799
Caucasian, n (%)107 (48.6)65 (38.2)0.123100 (48.1)72 (39.6)0.24898 (47.3)74 (40.4)0.357111 (46.4)61 (40.4)0.225
ISS28.828.20.58528.528.70.80328.528.70.84028.728.30.706
Penetrating, n (%)91 (41.2)95 (55.9)0.00692 (44.2)94 (51.6)0.15693 (44.9)93 (50.8)0.265108 (45.2)78 (51.7)0.252
HR on arrival1111180.0211121180.0401121170.0601141160.421
SBP on arrival1001030.3521001020.46699.51030.2411001030.302
GCS on arrival1110.50.31510.910.70.65910.910.80.89510.810.90.900
Mortality, n (%)
 4 h27 (12.3)10 (5.9)0.03727 (13)10 (5.5)0.01527 (13)10 (5.5)0.014
 24 h33 (15)14 (8.2)0.04335 (16.8)12 (6.6)0.00335 (16.9)12 (6.6)0.00235 (14.6)12 (7.9)0.048
  • GCS, Glasgow Coma Scale; HR, heart rate; ISS, Injury Severity Score; SBP, systolic blood pressure; WB:RBC, whole blood to packed red blood cell ratio.