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Table 1 Comparison of Period 1 and 2 for patients with abdominal injury

From: Abdominal injuries in a major Scandinavian trauma center – performance assessment over an 8 year period

  Period 1 Period 2 p
  n = 325 n = 630  
Age, mean 34.6 33.4 0.36
Male (%) 243 (75) 453 (72) 0.36
Blunt (%) 281 (86) 542 (86) 0.92
GCS score, median (quartiles) 15.0 (7.5-15.0) 15.0 (11.8-15.0) <0.01
ISS, median (quartiles) 29.0 (17.0-42.0) 26.0 (16.0-38.0) 0.05
LOS, median (quartiles) 6.0 (3.0-11.0) 8.0 (4.0-14.0) <0.01
Deaths (%) 63 (20) 65 (10) <0.01
W NTDB 05 (95% CI) 4.14 (1.93 to 6.36) 6.77 (4.83 to 8.71)  
  1. GCS: Glascow Coma Scale; ISS: injury severity score; LOS: length of stay; W NTDB 05: W-statistics with coefficients from National Trauma Data Bank 2005; CI: confidence interval.
  2. One patient from period 2 has missing data on age, mechanism of injury, GCS and ISS.