Mentally distressed people are more likely to be shot and killed by police during armed responses, than others

That's the findings of a study conducted by the universities of Waikato, Otago and AUT.

Researchers analysed investigations by the Independent Police Conduct Authority, from 1995 to 2019.

Of the reports, only 18 per cent involved a mental health crisis, but more than 40 per cent ended in a shooting.

Waikato University mental health expert Anthony O'Brien says police need to take preventative steps.

He says in 90 per cent of crises cases, the family knew the issues and police could've factored that information into any decisions.