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Table 3 Comparison of patient groups

From: Prognostic factors in endovascular treated pelvic haemorrhage after blunt trauma

  First group Second group p value
\( {\overset{-}{x}}_1\pm {\sigma}_1 \) n 1 \( {\overset{-}{x}}_2\pm {\sigma}_2 \) n 2  
Patients under 65 vs. over 65 years
 ISS 27.9 ± 14.3 66 17.1 ± 13.3 46 < 0.0001
 Surgical procedures 2.2 ± 1.4 66 1.1 ± 1.1 46 0.0001
 Transfusion received 44 yes / 22 no 66 18 yes / 28 no 46 0.0065
 Hb (g/l) 89.6 ± 28.8 66 100.8 ± 23.6 46 0.0115
 Haematoma volume (ml) 789.9 ± 484.0 66 614.0 ± 400.3 46 0.0325
 Hospitalization (days) 34.6 ± 27.4 66 25.5 ± 27.1 46 0.0376
 Survival 8 yes / 58 no 66 9 yes / 37 no 46 0.2974
Male vs. Female patients
 Surgical procedures 1.9 ± 1.4 72 1.4 ± 1.5 40 0.0393
 Duration trauma-angiography (min) 393.7 ± 1088.0 69 405.5 ± 463.0 38 0.0475
 ISS 24.8 ± 14.8 72 21.1 ± 14.8 40 0.1927
 Survival 9 yes / 63 no 72 8 yes / 32 no 40 0.4100
Surviving vs. Deceased patients
 Length of overall hospitalization 34.2 ± 27.6   12.0 ± 18.9 17 < 0.0001
 Haematoma volume (ml) 650.4 ± 413.7 95 1093.3 ± 521.9 17 0.0002
 ISS 21.5 ± 13.7 95 34.8 ± 16.1 17 0.0015
 Surgical procedures after angiography 1.1 ± 1.1   0.6 ± 1.1 17 0.072
 Share of microcoils (% of total) 63.1 ± 46.5 89 28.5 ± 46.8 14 0.0078
 PTT (s) 44.7 ± 24.7 95 71.2 ± 53.4 17 0.0114
 Hb (g/l) 97.1 ± 26.2 95 77.6 ± 27.5 17 0.0123
 Microcoils used 64 yes / 25 no 89 5 yes / 9 no 14 0.0127
 Transfusion received (any) 0.8 ± 0.4 95 0.9 ± 0.3 17 0.463
  Packed red blood cells 4.5 ± 6.3 95 8.8 ± 2.1 17 0.021
  Fresh frozen plasma 0.3 ± 0.8 95 1.0 ± 1.4 17 0.046
  Platelet concentrate 2.8 ± 6.4 95 5.5 ± 4.2 17 0.077
 Length of microcoils (mm) 427.5 ± 646.0 89 227.9 ± 450.8 14 0.0473
 Surgical procedures before angiography 0.1 ± 0.3 95 0.2 ± 0.4 17 0.669
 Length of intensive care stay 19.5 ± 21.9 95 18.6 ± 20.2 17 0.741
  1. Hb Haemoglobin, ISS Injury Severity Score, PTT Partial thromboplastin time