TABLE 1

iTBI Definitions

iTBI: Inflicted traumatic brain injury, also referred to as shaken-baby syndrome, shaken-whiplash syndrome, abusive head trauma, or inflicted childhood neurotrauma.
Initial iTBI: Infants in our cohort who enter the model with iTBI. By definition, these infants are well appearing. Such infants may be diagnosed or remain undiagnosed. Infants with initial iTBI and no subsequent iTBI have an outcome of “mild iTBI.”
Subsequent iTBI: Infants in our cohort who sustain repeat iTBI after having initial iTBI at 5 wk of age.
Mild iTBI: Infants in the cohort who sustain iTBI (either initial or subsequent) not resulting in long-term disability. Such infants may be diagnosed or remain undiagnosed.
Severe or fatal iTBI (“case”): Infants in the cohort who sustain iTBI (subsequent) resulting in long-term disability or death. Such infants are diagnosed appropriately by model assumption and represent the “cases” that a CT policy might prevent.