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Table 1 Comparison of patient characteristics between the HIRT-A and HIRT-U periods

From: Physician staffed helicopter emergency medical service dispatch via centralised control or directly by crew – case identification rates and effect on the Sydney paediatric trauma system

  HIRT-A (n = 44) HIRT-U (n = 55) P value
Mean Age - years 7.2 ± 5.1 5.9 ± 5.0 0.20
Mean ISS 23 ± 7.4 21 ± 4.9 0.13
Median length of ICU stay in days 3 (1-8) 2 (1-9) 0.74
Mechanism of injury    <0.01
  Burn and/or scald 2 (5%) 10 (18%)  
  Drowning 5 (11%) 3 (5%)  
  Fall 13 (30%) 16 (29%)  
  MVA 2 (5%) 8 (15%)  
  Pedestrian 10 (23%) 5 (9%)  
  Assault 0 7 (13%)  
  Other 12 (27%) 6 (11%)  
Median length of hospital stay (days) 6.5 (1-29) 8 (5-20) 0.49