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Table 4 Majority rules model selection results and final Prediction of Acute Coagulopathy of Trauma (PACT) score

From: Development and validation of a prehospital prediction model for acute traumatic coagulopathy

Variable Models containing candidate predictor In final prediction model? Regression coefficient SE Standardized regression coefficienta Value Points per unit
First prehospital shock index ≥1 Forced into model Yes 0.933 0.249 0.324 Yes/no 90
Age 100 % Yes 0.0119 0.006 0.275 Age, rounded to nearest decade 1
Mechanism of injury not motor vehicle, motorcycle, or bicycle crash 100 % Yes 0.514 0.215 0.256 Yes/no 50
Number of GCS points below 15 98 % Yes 0.0705 0.032 0.171 15 – GCS 7
Prehospital CPR 100 % Yes 1.198 0.461 0.188 Yes/no 120
Prehospital intubation or advanced airway 74 % Yes 0.510 0.315 0.219 Yes/no 50
Prehospital chest decompression 0 % No
Time from injury to emergency department 6 % No
Constant N/A Yes -4.256 0.334
  1. aStandardized regression coefficients represent the change in the log-odds of acute traumatic coagulopathy for a 1 standard deviation increase in the value of the predictor. CPR cardiopulmonary resuscitation, GCS Glasgow Coma Score, N/A not applicable