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. Author manuscript; available in PMC: 2015 Jan 26.
Published in final edited form as: J Trauma Acute Care Surg. 2013 Oct;75(4):704–716. doi: 10.1097/TA.0b013e31829a0a65

Figure 1. Derivation of patient study sample from the California Office of Statewide Health Planning and Development Patient Discharge Database (1999–2011).

Figure 1

*=Excludes children with sole codes indicating minor injuries, perinatal or pregnancy associated conditions, burn injuries.

**=Children cared for in level III and IV TCs were eliminated when matching TC and ntC diagnoses

***=Categories are not mutually exclusive