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Table 3 Results obtained from regression models

From: The effect of hospital care on early survival after penetrating trauma

  Cox model Weibull model Weibull model
  Uncensored Uncensored Interval-censored
  HR 95% CI HR 95% CI HR 95% CI
Male age 40 to 64 vs male age 0 to 39 1.27 1.21, 1.34 1.28 1.21, 1.35 1.21 1.14, 1.28
Male age 65 to 79 vs male age 0 to 39 1.66 1.41, 1.96 1.82 1.52, 2.18 1.53 1.25, 1.86
Male age ≥80 vs male age 0 to 39 1.81 1.24, 2.64 2.04 1.40, 2.99 1.63 1.06, 2.51
Female age 0 to 39 vs male age 0 to 39 1.34 1.26,1.43 1.44 1.35, 1.54 1.35 1.26, 1.45
Female age 40 to 64 vs male age 40 to 64 1.39 1.26, 1.53 1.58 1.42, 1.75 1.44 1.28, 1.61
Female age 65 to 79 vs male age 65 to 79 1.78 1.32, 2.43 1.87 1.36, 2.56 1.84 1.29, 2.61
Female age ≥80 vs male age ≥80 1.29 0.73, 2.30 0.97 0.44, 2.14 0.78 0.33, 1.88
Firearm vs other mechanism 2.89 2.73, 3.06 2.99 2.82, 3.16 2.94 2.77, 3.12
Head/neck injury vs none 2.07 1.99, 2.16 2.21 2.12, 2.30 2.09 2.00, 2.18
Trunk injury vs none 1.24 1.19, 1.29 1.23 1.18, 1.29 1.30 1.24, 1.37
Hospital 0 to 30 min vs prehospital 3.20 2.92, 3.49 2.35 2.22, 2.49 0.68 0.63, 0.73
Hospital 31 to 60 min vs prehospital 0.89 0.76, 1.03 0.55 0.49, 0.61 0.22 0.19, 0.25
Hospital 61 to 120 min vs prehospital 0.46 0.39, 0.54 0.42 0.38, 0.47 0.29 0.26, 0.32
Hospital >120 min vs prehospital 0.06 0.05, 0.06 0.023 0.020, 0.025 0.012 0.011, 0.013
Level I trauma center vs other hospital 1.00 0.94, 1.06 1.00 0.94, 1.06 0.93 0.82, 0.97
Constant    0.0070 0.0064, 0.0076 0.0089 0.0082, 0.0097
Shape parameter    0.42 0.41, 0.43 0.45 0.44, 0.46
  1. For Weibull models, the constant multiplied by the applicable hazard ratios gives the scale parameter g(x;t); Weibull models also have a shape parameter p, as described in the text. HR, hazard ratio; CI, confidence interval.