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Table 6 Multivariate analysis of treatment costs

From: Outcomes and costs of blunt trauma in England and Wales

  Coefficient t statistic P value
Injury Severity Scalea
   10 to 16 1,062.3 5.8 <0.001
   17 to 25 4,328.1 13.5 <0.001
   26 to 75 8,921.9 18.4 <0.001
Age groupb
   25 to 44 years 1,188.3 5.8 <0.001
   45 to 64 years 2,777.8 11.9 <0.001
   65 to 74 years 4,080.4 12.4 <0.001
   75+ years 5,109.6 17.6 <0.001
Cause of injuryc
   Fall more than 2 metres -795.4 -3.3 0.001
   Fall less than 2 metres -1,751.8 -9.9 <0.001
   Blow(s) -1,700.0 -6.0 <0.001
Glasgow Coma Scored
   9 to 12 -4,863.9 -6.90 <0.001
   13 to 15 -8,819.9 -16.5 <0.001
Serious injuries by body regione
   Abdomen 3,656.3 4.5 <0.001
   Thorax 1,706.0 5.0 <0.001
   Spine 4,512.9 7.9 <0.001
   Upper limb 1,406.4 7.0 <0.001
   Lower limb 3,220.3 20.5 <0.001
Discharge status: dead -8,678.1 -12.8 <0.001
Grade of most senior doctor seen in the A&E departmentf
   Consultant 1,841.5 7.3 <0.001
   Middle grade 518.7 3.8 <0.001
Specialty of doctors seen in the A&E department
   Anaesthesia 2,476.1 6.3 <0.001
   General surgery 1,409.6 3.8 <0.001
Year of admissiong
   2004 -633.4 -3.3 0.001
   2005 -1,152.7 -5.1 <0.001
Observations 19,441   
Adjusted R2 0.283   
  1. Model also includes 43 hospital indicators. A&E, accident and emergency. aOmitted category is 0 to 9. bOmitted category is 18 to 24 years. cOmitted category is road traffic collision. dOmitted category is 3 to 8. eInjuries with an Abbreviated Injury Scale score ≥ 3. fOmitted category is senior house officer. gOmitted category is 2000 to 2003.