for any insurance claim ( this can be the only basis for their stats ) the crime must be reported to the police, hospitals must report all deaths to the police, or else they can not release a body - so i am not sure where you get this from
Nonsense. Insurance companies are often confronted with situations where they pay out despite no case number been given - as SAPS gets inundated with more pressing issues and case dockets are not necessarily opened for crimes that can be unresolved.
Hospitals report deaths only as such - and not as murders, etc. Many hospital reported deaths are not investigated and as such may be considered suicides.