Case Inclusion Criteria
For consideration as a CIREN case, the vehicle model year must be within 6 years of the current year and the occupant must have either an AIS 3 injury or 2 or more AIS 2 injuries in different body regions with clinical significance. No ejected occupants are enrolled in CIREN. There are injury severity, crash configuration, and model year exceptions for pediatric and pregnant occupant cases.
Cases with greater than 6 quarter turns, significant rear impacts, or complicated crash scenarios are excluded from CIREN. These CIREN case inclusion criteria were designed to ensure clean crashes and a database with very detailed information about occupant injuries and outcome for the study of real-world crashes.