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Table 4 Entrapment rates in the two physician teams

From: Prehospital response model and time to CT scan in blunt trauma patients; an exploratory analysis of data from the head injury retrieval trial

  Never trapped Trapped, extricated prior to physician team arrival Trapped, extricated after physician team arrival
GSA HEMS n = 46 19 (41%) 13 (28%) 14 (30%)
HIRT HEMS n = 165 105 (64%) 9 (5%) 51 (31%)
  1. Data for cases from December 2007 to March 2011 (see Methods).