When considering recertification, a residual risk of PTE of 1% or less is acceptable, given
that the prevalence of epilepsy in the community is 0.33%.
Conditions that require careful assessment and which most commonly result in a "fail"
assessment are: epilepsy, intracerebral haematoma, , persisting CSF fistula, primary open
cerebral laceration, and the presence of any significant permanent neurological deficit.
Seems CASA's standard is not as strict as CAA, the PTE required is less than 1%