TABLE 2.

The Impact of Inflicted Injury on LOS and TC for Head Traumas

Independent VariablesDependent Variables
Length of Stay (Days)Ln (Total Charges ($))
Regression CoefficientStandard ErrorRegression CoefficientStandard Error
Inflicted3.29*1.490.93**0.20
Ln (age)0.310.250.12**0.03
Inflicted × ln(age)−0.130.54−0.23**0.07
Severity 21.80**0.550.63**0.08
Severity 38.76**0.871.73**0.12
Severity 423.12**1.092.71**0.15
Inflicted × severity 2−1.401.38−0.340.19
Inflicted × severity 3−1.261.55−0.44*0.21
Inflicted × severity 4−7.84**1.75−0.54*0.24
Death−12.25**0.96−0.41**0.13
Pediatric Trauma Center1.18*0.480.55**0.07
Discharged in 19940.410.750.090.10
Discharged in 19950.800.770.170.10
Discharged in 19960.460.760.21*0.10
Discharged in 19971.400.770.38**0.10
Discharged in 19981.270.790.48**0.11
Discharged in 19990.430.820.45**0.11
Discharged in 2000−0.220.820.46**0.11
Constant−0.410.937.18**0.13
N10561056
R20.450.53
Overall effect of inflicted injury6.139.10
Percent difference, inflicted vs unintentional51.7188.93
  • * Indicates P < .05,

  • ** P < .01.